power cord

(electronics) A cable that connects an electrical appliance to a socket.


CCN

(electronics) Initialism of controlled-controlled not gate.


GTL

en-noun

GTL (countable and uncountable, plural GTLs)

Gunning transceiver logic
Gunning transceiver logic#English

(electronics) Initialism of Gunning transceiver logic.


VAC

alternating current
alternating current#English

(electrical) Initialism of volt of alternating current.


breakout board

(electronics) A minimal PCB with a single component, used for easier prototyping.


bed of nails

(electronics) A device for testing a chip, consisting of an array of spring-loaded pins.


(electronics) 18650 (electrochemical battery of a secondary storage cell)


(electronics) 2170 (electrochemical battery of a secondary storage cell)


post-transistor

during the genesis of solid-state electronics and the post-transistor era of integrated circuits for telecommunications, computers, and digital signal machines

the International Business Machines 360 series, which emerged in the late nineteen‐sixties as a major post-transistor family of general purpose computers.

(context, electronics) belonging to the time (late 1960s) after individual transistors were replaced by integrated circuits


counterphase

electrical engineering
electrical engineering

(electrical engineering, physics) That have phase difference of around 180°, or π


synphase

(electrical engineering, physics) That have the same or close phase; that have phase difference of about 0.


fuzzy controller

fuzzy controller (plural fuzzy controllers)

(computing, electronics) A controller that uses a fuzzy logic ruleset.


PTDF

(energy) Initialism of Power Transfer Distribution Factor.


point-to-point

From point (“individual element in a larger whole; specific location or place; topic of discussion or debate”) + to + point.

printed circuit board
printed circuit board

Travelling directly from a starting point to an ending point, or from one point to another in a series of points without passing through any intermediate points.

(electronics) Being or relating to a method of manually constructing electronic circuits prior to automation and printed circuit boards, where components were individually mounted on the chassis prior to soldering.

punt-naar-punt

being or relating to a method of manually constructing electronic circuits where components were individually mounted on the chassis prior to soldering


D-sub

Clipping of D-subminiature, from the Cannon part numbering system where such connectors’ designations are prefixed with D.

Some serial ports use a 25-contact D-sub, but with few exceptions, a 25-pin serial D-sub on a PC is male, with the female connector on the cable—the reverse of the parallel-port convention. (Other serial ports use 9-pin D-subs instead.)

1996, Jan Axelson, Parallel Port Complete: Programming, Interfacing & Using the PC’s Parallel Printer Port:

(electronics) an electrical connector with two or more rows of pins or sockets surrounded by a D-shaped metal shield


reballing

BGA reballing requires that the stencil match the ball size, inter-ball distance (pitch) and ball configuration of the chip.

2005 November 15, Mark Pollitt, Sujeet Shenoi, “5.2 Reballing”, in Advances in Digital Forensics: IFIP International Conference on Digital Forensics, National Center for Forensic Science, Orlando, Florida, February 13-16, 2005 (IFIP Advances in Information and Communication Technology), Springer Science & Business Media, →ISBN, →LCCN, →OCLC, page 195:

(electronics) The process of reapplying the balls (protruding contacts) on a ball grid array.


HIL

(electronics, embedded systems) Initialism of Hardware-In-the-Loop.


ICNIRP

(electronics) Initialism of International Commission on Non-Ionizing Radiation Protection.


latch-up

(electronics) A kind of short circuit caused by the inadvertent creation of a low-impedance path between the power supply rails of a MOSFET circuit.


unlooper

(electronics) A device used to break a smart card's microcontroller out of an infinite loop state that makes it otherwise unusable.


downstrike

Besides forming new cores, arcs may also form branches, and "downstrikes" are liable to be particularly troublesome.

1959, Electrical Times - Volume 135, page 355:

When a downstrike is established, the longer arc in parallel dies away rapidly and the process appears on oscillograms as a sudden reduction in arc voltage.

1959, Proceedings of the Institution of Electrical Engineers:

This was prevented by reducing the space between the plates in that portion of the chute, so that when downstrikes occurred tie new arc core remained under control and returned up into the chute again.

1959 -, The Electrical Review - Volume 164, Issues 10-17, page 447:

These "downstrikes" were recorded with an electromagnetic oscillograph and a high-speed camera, and now a good correlation exists between the two records.

1962, Transactions of the American Institute of Electrical Engineers, page 204:

(electrical engineering) A (usually unintended) branch of current that arcs downward to ground.


wiring harness

wiring harness (plural wiring harnesses)

Remove and discard cable straps (45) securing front wiring harness (11) to main wiring harness (10) and to fuel cutoff control.

1974, Department of the Army, Direct Support and General Support Maintenance Manual for Carrier, Guided Missile Equipment, Self-propelled, page 4-24:

Today, an automobile assembled in the United States could have a Japanese-built engine, a French transmission, a wiring-harness assembly from Mexico, electrical parts from Brazil, and a radio from Taiwan.

1985, International Trade Commission, The Internationalization of the Automobile Industry and Its Effects on the U.S. Automobile Industry, page vii:

(automotive, electronics) A bundle of insulated wires, often held together with straps or other connectors, that transmit signals or electrical current within a vehicle, electronic device, etc., or between them.


wiring loom

Due to the extent of damage to the ceiling panels in the cabin, all the panels were removed and the wiring looms were visually inspected while the aircraft was at Learmonth. No defects were observed.

2011 December 19, Australian Transport Safety Bureau, “1.12.5 Aircraft wiring examinations”, in In-flight upset - 154 km west of Learmonth, WA, 7 October 2008, VH-QPA, Airbus A330-303, archived from the original on 2022-05-05, page 50:

The next task is to pass the cable wiring loom through the boat. If you have ducting running along the inside of the hull this is ideal, but most boats will not be equipped with such luxuries, so you will have to find the best way through and then protect the cables with cable trunking (plastic protection).

2015, Bloomsbury Publishing, The Boat Improvement Bible, page 108:

(electrical) A wiring harness; a bundle of wires, tied together but not enclosed in a rigid conduit, that transmit signals or electrical current within a device.


FICT

FICT (countable and uncountable, plural FICTs)

(countable, electronics) Initialism of Fixtureless In-Circuit Test.


in-circuit

an in-circuit test

(electronics) Existing or performed within a circuit.


minigrid

(electronics) A component consisting of conductive horizontal and vertical filaments woven together.


Schmitt trigger

Schmitt trigger (plural Schmitt triggers)

Invented by American scientist Otto H. Schmitt in 1934.

(electronics) A comparator circuit with hysteresis implemented by applying positive feedback to the non-inverting input of a comparator or differential amplifier. It converts an analog signal to a digital one.


PSSD

(electronics) Initialism of portable SSD.


uninterruptible power supply

uninterruptible power supply (plural uninterruptible power supplies)

Examples of emergency power supplies include a storage battery or group of batteries, a generator driven by a fuel-supplied prime mover, or an uninterruptible power supply (UPS) […].

2009, Geoff Craighead, High-Rise Security and Fire Life Safety, page 357:

This upgrade comes after the installation of a $50,000 uninterruptible power supply system to compliment the facilities independent power supply.

(electrical engineering) A device or system that almost instantaneously provides emergency power in the case that main power fails.


subfeed

(electrical engineering) A part of an electricity or antenna feed.


ODR

(electronics) Initialism of octal data rate.


electrostatic force

electrostatic force (plural electrostatic forces)

Relation between electrostatic force and variation of electric potential.—§ 7, otherwise stated, is equivalent to this:—the average component electrostatic force in the straight line of air between two points in the neighborhood of an electrified body is equal to their difference of potentials divided by their distance.

1860 November 22, William Thompson, “Measurement of the electromotive force required to produce a spark in air between parallel metal plates at different distances”, in Proceedings of the Royal Society of London, volume X, page 336:

Coulomb’s law describes the electrostatic forces exerted between pairs of charges, but practical situations are rarely that simple.

1995, Joseph M. Crowley, “Electrostatic fundamentals”, in Jen-Shih Chang, Arnold J. Kelly, Joseph M. Crowley, editors, Handbook of Electrostatic Processes, page 10:

(electricity) Coulomb force, the attraction or repulsion between particles based on their electric charge.


EIDE

(electronics) Initialism of Extended Integrated Drive Electronics.


phase angle

(electronics) Angular component of the vector representation of a sinusoid.


power to gas

(electricity) The storing of generated electrical power as a gaseous substance, usually by electrolyzing water into hydrogen and oxygen gases and carbonizing the hydrogen into methane gas.


deassert

en-verb

deassert (third-person singular simple present deasserts, present participle deasserting, simple past and past participle deasserted)

deasserts (present singular third-person)
deasserting (participle present)
deasserted (participle past)
deasserted (past)

The controller deasserts this line to allow the talker to place status or data on the data bus.

1985, Vinod Kumar Bansal, Design of Microprocessor Based Systems, Wiley Eastern Limited, →OCLC, page 131:

It therefore inserts a wait state into the third data phase by deasserting IRDY# at the start of clock cycle four.

1999, Don Anderson, PCI System Architecture, Addison-Wesley Professional, →OCLC, page 139:

The third requirement is to deassert the outputs to their inactive state in response to the input conditions being satisfied.

2017, Randal Fulton, Airborne Electronic Hardware Design Assurance: A Practitioner's Guide to RTCA/DO-254, CRC Press:

(electronics) To remove a signal on a line.


line card

(electronics, telecommunications) A modular electronic circuit designed to fit on a separate PCB and interface with a telecommunications access network.


CLV

en-noun

CLV (countable and uncountable, plural CLVs)

(electronics) Initialism of constant linear velocity, a qualifier for the rated speed of an optical drive.


residual-current device

residual-current device (plural residual-current devices)

(electricity) An automatic circuit breaker that rapidly disconnects an electric circuit when the imbalance of the currents going through it exceeds a specific value.

etengailu diferentzial

a device that breaks an electric circuit

dispositif différentiel à courant résiduel


power electronics

(electricity) A technology and engineering field within electronics, concerning electric power delivery and distribution.

(electronics) Used other than figuratively or idiomatically: see power, electronics. Electronics for controlling electric power and energy.


overpulse

The algorithm then requires that you multiply the interval by 3 to yield a single overpulse.

1985, EDN, Electrical Design News - Volume 30, page 165:

In an electromagnetic launcher such as a railgun for propelling a projectile at high velocity, an overpulse energy recovery circuit is employed to transfer stored inductive energy from a source inductor to the railgun inductance to propel the projectile down the railgun.

1986, Catalog of Government Patents, page 75:

For example, Intel's earlier Intelligent programming algorithm, which is still required for cerdip parts, uses a one millisecond pulse and an overpulse scheme.

1987, Electronic Packaging and Production:

(electronics) An electric pulse that spikes above normal operating levels.


cold cathode

On the open portions of the platforms the loudspeakers are installed on the cold cathode lighting columns.

1962 June, “The Eastern Region completes the Colchester scheme”, in Modern Railways, page 412:

(electronics) A type of cathode that does not use a heating element to produce emission of cathode rays (electrons), beyond base thermionic emission (usually by field electron emission, secondary emission, photoelectric emission)


deassertion

deassertion (countable and uncountable, plural deassertions)


VDR

Coordinate term: CDR

voltage divider rule
voltage divider rule#English

voltage division rule
voltage division rule#English

(electronics) Initialism of voltage divider rule or voltage division rule.


power cable

(electricity) An insulated cable which carries electrical current.


voltage divider

voltage divider (plural voltage dividers)

Coordinate term: current divider

(electronics) A type of simple electronic circuit which reduces any input voltage by a fixed factor using sources of impedance (such as resistors) connected in series.

Spannungsteiler

circuit that reduces input voltage using sources of impedance


subswitch

(electronics) A simpler switch that is a component of a more complex switch, used in telephone exchanges or data routing.


subchanneled

(radio, electronics, zoology) Divided into subchannels.


power lead

(British, electricity) a power cable or power cord which connects an appliance or other electrical device to the mains.


pin header

(electronics) A type of electrical connector, consisting of one or more rows of male pins evenly spaced apart.


TCON

(electronics) display timing controller circuit (ASIC or FPGA)


power failure

Sadly, some modern rolling stock engineers must hang their heads in shame after the recent power failures on Thameslink, where trains had to be reset by technicians after the supply frequency wandered off the 50hz.

2019 October, Ian Walmsley, “Cleaning up”, in Modern Railways, page 43:

(electricity) An unscheduled or accidental break in the supply of electricity.

sähkökatko

power failure — see also power cut, outage, blackout


ohmic resistance

ohmic resistance (countable and uncountable, plural ohmic resistances)

(electricity) That portion of the apparent resistance or impedance of a circuit which depends only upon the dimensions of the conductors, their temperature, and the materials of which they are composed.


specific resistance

specific resistance (plural specific resistances)


VCB

(electrical engineering) A vacuum circuit breaker.


mercury arc rectifier

mercury arc rectifier (plural mercury arc rectifiers)

The secondary winding is laid in four coils, one on top of the other, with oil passages round the laminated-steel core; its 2,770V a.c. output is converted to 1,970V d.c. by four air-cooled mercury arc rectifiers, which feed each pair of 975V traction motors through a smoothing choke.

1961 March, “Interim report on the Glasgow suburban electric train failures”, in Trains Illustrated, page 175:

Additionally, semi-conductor rectifiers are far more economical of space, with the result that there is room in the Doncaster-built locomotives employing them for rheostatic braking apparatus within the weight and dimensions previously needed for mercury-arc rectifiers.

1961 December, “Talking of Trains: The 25kV rolling stock”, in Trains Illustrated, page 708:

(electrical engineering) A rectifier which converts alternating current to direct current, using a cathode tube with a pool of liquid mercury. Now superseded by solid-state rectifiers.


breadboardable

en-adj

breadboardable (comparative more breadboardable, superlative most breadboardable)

more breadboardable (comparative)
most breadboardable (superlative)

(electronics, of an electronic board or component) That can be installed on a breadboard.


ball grid array

en-noun

ball grid array (plural ball grid arrays)

(electronics) A type of surface mount used to connect integrated circuits to printed circuit boards.


DNI

(electronics) Initialism of do not install.


sub-station

They form part of the vast electrification and reconstruction schemes which have been in hand for a number of years at Liverpool Street, and in suburban Essex, and include the rearrangement of tracks, of which the Ilford flyover forms part; the modern signal boxes, now needed only at key points; the electric control or sub-stations; and a large electric car shed.

1951 January, R. A. H. Weight, “A Railway Recorder in Essex and Hertfordshire”, in Railway Magazine, page 44:

The stations, lifts and trains were all brightly lit with electricity, and there was no question of voltage drop from being too far from the source of the power because the Central was the first line long enough to justify the building of sub-stations along the route.

2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, pages 118–119:

(electricity) Alternative form of substation.


return path

The inner, or negative, rail is also known as the 'current return' rail, because electrical current needs a circuit - a return path to earth, in other words.

2012, Andrew Martin, Underground Overground: A passenger's history of the Tube, Profile Books, →ISBN, page 136:

One rail (known as the traction return rail) is not broken into [track circuit] sections as it provides the return path for the current.

2023 November 15, Prof. Jim Wild, “This train was delayed because of bad weather in space”, in RAIL, number 996, pages 30-31:

(electricity) The route by which a current or signal returns to its source, or to earth.


feedpoint

(electronics) The location on an antenna where radio frequency electrical power is applied.


brick-wall limiter

brick-wall limiter (plural brick-wall limiters)

(electronics) A limiter circuit that completely cuts off signals above a specified threshold, rather than merely attenuating the peaks.


black start

(electrical engineering) The process of restoring an electric power station or part of an electric grid to operation without relying on the external electric power transmission network.

pimeäkäynnistys

restoring a power station or part of a grid without relying on an external network


gender mender

(electronics) Synonym of gender changer (“electronic coupling device”)


vactrol

From a trademark introduced by Vactec, Inc. in the 1960s.

(electronics) A resistive opto-isolator.


prescaler

(electronics) A counting circuit used to reduce a high-frequency electrical signal to a lower frequency by integer division.


calligraphic projection

(electronics, computer graphics) A system for displaying or projecting an image composed of a beam of light or electrons directly tracing the image, as opposed to sweeping in raster order over the entire display surface.


QLC

(countable, electronics) Initialism of quad-level cell.


keybounce

Many of you have experienced what we call “Keybounce” — multiple letters from one keystroke.

1978 November, Radio Shack Microcomputer Newsletter:

A typical inexpensive key will settle down within five milliseconds, so if the keyboard scanning software polls the key less often than this, the controller will effectively miss the keybounce.

2004, Randall Hyde, Write Great Code Volume 1: Understanding the Machine, →ISBN, page 348:

(computer hardware, electronics) Multiple recorded keystrokes from a single press of a key on a computer keyboard due to poor electrical contact.


self-clocking

(telecommunications, electronics) Of a signal: able to be decoded without the need for a separate source of synchronization.


card clash

From September passengers will be able to enter by tapping their credit card at the barriers – with the new Tannoy announcement "avoid card clash" joining the familiar "mind the gap" as the sound of the Underground. Card clash can be avoided with an even newer technology, contactless payments via mobile phones: […]

2014 August 13, Gwyn Topham, “Open data and driverless buses: how London transport heads to the future”, in The Guardian:

(banking, electronics) The situation where two or more contactless payment cards are simultaneously detected by a card reader, possibly resulting in the incorrect card, or more than one card, being charged.


MIMO

(electronics, telecommunications) Ellipsis of MIMO technology. (multiple-input multiple-output technology)

MIMO-ODFM

MIMO orthogonal frequency division multiplexing


misclock

When misclock occurs, it is recorded as an audio datum and an alarm is given.

1978, Journal of the Radio Research Laboratories:

After each phase crossing there is a chance of a misclock being produced by jitter induced phase reversal at subsequent clocking edges.

2002, The 2002 45th Midwest Symposium on Circuits and Systems, page 562:

We will present a model to determine this minimum difference frequency given the acceptable risk of a misclock.

2002, I Shankar, SA Morris, CG Hutchens, “A novel frequency measurement technique for quartz microbalance systems and other resonator-based sensor systems”, in Proceedings: 2nd ISA/IEEE Sensors for Industry Conference:

(electronics) An error in the synchronization or coordination of the sequence or timing of actions by a device.


misclock

en-verb

misclock (third-person singular simple present misclocks, present participle misclocking, simple past and past participle misclocked)

misclocks (present singular third-person)
misclocking (participle present)
misclocked (participle past)
misclocked (past)

This glitch can misclock the DMA state controller and indirectly mess up the memory unit in use.

1977, Conference Proceedings: Computer Faire, page 288:

We didn't get past the start. It was misclocked opened and we got too much lox flow in the main chamber early.

1995, SSME Post Test Diagnostic System: Systems Section, page 57:

This occurred despite an alignment pin design feature to prevent misclocking. It occurred despite a sensitivity test of the system a few days before liftoff to confirm live activity and correct polarity of all of the rate gyros.

2001, Walter Edward Hammond, Design Methodologies for Space Transportation Systems, page 696:

(electronics) To cause or produce a misclock.


SBH

Schottky barrier height
Schottky barrier height#English

(electronics) Abbreviation of Schottky barrier height.


series-wound

A motor car is provided with two self-ventilated series-wound G.E.C. traction motors, each having a continuous rating of 80 h.p. at 575 V. 116 A. at a field strength of 66 per cent.

1960 February, “The first of London's new Piccadilly Line trains is delivered”, in Trains Illustrated, page 94:

(electrical engineering) Of an electric motor, having the windings connected in series.


neutral section

en-noun

neutral section (plural neutral sections)

When a driver approaches a neutral section separating sections of 25 kV. and 15 kV. overhead catenary, he trips the main circuit-breaker but keeps his pantographs up; as soon as the next section of live wire is reached, he re-sets his contact-breaker, whereupon voltage-sensitive relays automatically make appropriate connections to the auxiliary circuits.

1960 March, “Silicon Rectifiers for a French dual-frequency Bo-Bo locomotive”, in Trains Illustrated, page 166:

(rail transport, electrical engineering) A dead section of overhead line for supplying power to trains between two live sections, used to separate two power supplies, different phases and supply voltages.


one-hot

(electronics, computer science) A set of bits with only a single high (1) bit, with the remaining bits low (0).


split-ring

split-ring resonator
split-ring resonator

(electronics) Either of a pair of concentric metallic rings with slits on opposite sides, used in split-ring resonators.


load bank

Electric locomotives [...] Class 84: 84009 was taken on by the Derby RTC as a load bank locomotive in August 1978, [...]. It lasted in this role until December 1992 and was scrapped exactly three years later.

2020 July 1, Pip Dunn, “Department store”, in Rail, page 92:

(electrical engineering) A piece of electrical test equipment used to simulate an electrical load, to test an electric power source without connecting it to its normal operating load.


eMMC

(electronics) An embedded (“integrated, non-removable”) MMC (“multimedia card”). An electronic memory module designed to be integrated into devices instead of being a removable card, functioning as a storage device or main drive. A variant of the MultiMediaCard format.


dynostarter

The diesel engine is mounted forward of the transmission with the dynostarter coupled to an auxiliary drive at the rear of the transmission.

1960 June, “The N.B. Loco. Co. diesel-hydraulic Type "2" locomotive”, in Trains Illustrated, page 345:

(electrical engineering) A dynamo which is also a starter motor.


coil whine

(mechanics, electronics) A high-pitched whining sound caused by vibrations of electrical components in a device.


commutatorless

Among the projects in which the B.T.C. and private firms have a common interest is the development of a satisfactory commutatorless motor; commutation difficulties with rectified d.c. for the motors of the 25 kV. a.c. multiple-unit stock, for example, have led to many experiments with and modifications of the inter-pole magnetic circuit.

1961 February, R. K. Evans, “The role of research on British Railways”, in Trains Illustrated, page 95:

(electrical engineering) Without a commutator.


demod

en-verb

demod (third-person singular simple present demods, present participle demodding, simple past and past participle demodded)

demods (present singular third-person)
demodding (participle present)
demodded (participle past)
demodded (past)

General Instrument now claims compression rate of 14 to 1. Also the signal is not demodded at the cable headend, just some form of downconversion, then 1 satellite transponder W/14 services then becomes 14 services in a 6 mhz TV channel.

1997 May 23, Lee Haefele, “Re: All TV ?”, in rec.video.cable-tv (Usenet):

(transitive, electronics, informal) To demodulate.


demod

The saleperson said that Yamaha didn't realize the popularity of demods and they will start production soon after some engineering updates/improvements and they expect delivery in May.

1999 March 12, JackH35785, “Re: Anybody know a cheap source for an AC-3 RF Demodulator?”, in alt.video.laserdisc (Usenet):


dual-frequency

Trials with three experimental dual-frequency mixed-traffic locomotives intended for use on the Saar's 15kV 16⅔-cycle (German) and 25kV 50-cycle (French) lines have proved so successful that the German Federal Railway is contemplating the construction of a fleet of 20 to 25 similar machines.

1961 May, “New European motive power: I - German dual-voltage locomotives”, in Trains Illustrated, page 305:

(electrical engineering) Able to operate on two different electrical frequencies.


skim pit

(petroleum mining) An open-air pit into which a mixture of oil and water is pumped and left to separate so that the oil can be extracted.


brightup

The effect of parasitic brightup of the picture tube glass on the accuracy of position measurements is considered.

1969, V. D. Andreev, Theory of Internal Navigation Aided Systems (page 230)

Any variation of the apparent start of the trace indicates a brightup (unblanking) pulse with a poor leading edge, […]

1971, Leslie Ernest Weaver, Television Measurement Techniques, page 358:

An additional output from the timebase section is the blanking pulse which biases back the grid of the c.r.t. during flyback; this may be supplemented by a “brightup' pulse which switches the beam on during the forward stroke

1973, Ian Robertson Sinclair, Understanding Electronic Circuits, page 184:

[…] but instead are used to modulate the oscilloscope brightness, one brightup of the beam corresponding to each fringe maximum.

2013, C. F. Barnett, M. F. A. Harrison, Plasmas: Applied Atomic Collision Physics, Vol. 2 - Volume 2, page 201:

(electronics) A pulse of the beam (cathode ray) in a cathode ray tube that causes a blank screen to fluoresce.


CTI

(electronics, telecommunications) Initialism of Computer Telephony Integration.


rotary switch

A close-up of the very compact desk unit for control of the East Finchley programme machine from Leicester Square; the rotary switches at the top are used to set up the train number of any service to be added or cancelled.

1961 October, “More programme machines for L.T. Northern line”, in Trains Illustrated, page 625, photo caption:

(electrical engineering) A switch that is operated by turning a knob.


SPI

en-noun

SPI (countable and uncountable, plural SPIs)

Serial Peripheral Interface
w:Serial Peripheral Interface

(electronics) Initialism of Serial Peripheral Interface.


crimping tool

(electricity) A tool used to crimp, to join two pieces of metal.


charactron

Originally a trademark, presumably character + -tron.

(electronics) A form of cathode ray tube used to display letters and other characters


cycloconverter

(electronics) A device that modifies alternating current to a lower frequency without converting it to direct current


cycloconversion

(electronics) The modification of alternating current to a lower frequency without converting it to direct current.


typotron

Originally a trademark, presumably type + -o- + -tron.


monoscope

(electronics) A device that produced a single video image


nonode

(electronics) A thermionic valve that has nine internal electrodes (typically including seven grids)


ground wire

(electricity) A wire that connects a circuit to ground.


Voc

(electronics, physics) Alternative form of VOC; from V_(OC); Initialism of open-circuit voltage.


Gunning transceiver logic

Invented by William Gunning while working for Xerox.

(electronics) A kind of logic signaling used to drive electronic backplane buses, having a voltage swing between 0.4 and 1.2 volts—much lower than that used in TTL and CMOS logic—and symmetrical parallel resistive termination.


extension lead

(electronics, UK, Ireland) extension cord


extension reel

(electronics) An extension lead that rolls up, usually into the socket end, which in some cases has more than one socket on it (often 2 or 4).


roll off

en-verb

roll off (third-person singular simple present rolls off, present participle rolling off, simple past and past participle rolled off)

rolls off (present singular third-person)
rolling off (participle present)
rolled off (participle past)
rolled off (past)

rolled-off highs

(electronics) To show reduced response at the upper or lower limits of a frequency range.


MCM

en-noun

MCM (countable and uncountable, plural MCMs)

(electronics) Initialism of multi-chip module.


chiplet

(electronics) Any of the integrated circuits making up a multi-chip module (MCM).


overscaling

(electronics) Adjustment of a parameter to exceed a normal limit


NPN

An NPN, in conjunction with a PNP and resistors, can be used to create logic gates.

NPN transistor
w:Bipolar junction transistor#NPN


regenerative braking

Dead-man's handle, automatic train stop, quick-acting compressed-air brake specially suited for high-speed working, and regenerative braking are among the features of the new locomotives.

1947 March and April, “Swiss High-Speed Electric Locomotives”, in Railway Magazine, page 94:

Regenerative braking, whereby the car's kinetic energy is fed back to the supply line, has recently been introduced on the Kei-Han-Shin Kyuko Railway's commuter services feeding Osaka, instead of resistor braking, and on 52 lightweight cars built in 1960 and 1961 advantage has been taken of this feature to install constant speed controls.

1962 December, “Constant-speed electric multiple-units in Japan”, in Modern Railways, page 404:

Regenerative braking is retained. Like rheostatic braking, this uses the traction motors to provide a braking effort, but the current developed is fed back into the overhead catenary rather than dissipated through resistance banks.

2023 July 26, David Clough, “Technology progression defines Class 93”, in RAIL, number 988, page 54:

(rail transport, automotive, electrical engineering) A form of braking used on some electric vehicles in conjunction with the main braking system, where kinetic energy from braking is converted into electricity and fed back into the power supply by using the traction motors as generators.


superregenerator

(electronics) A superregenerative device


unilateralization

unilateralization (countable and uncountable, plural unilateralizations)


multigated

(electronics) That has multiple gates on a single transistor device


firm error

(electronics, computing) A type of error where a signal or datum becomes wrong and stays wrong until the equipment is power-cycled, but does not physically damage the equipment's hardware.


power-cycle

en-verb

power-cycle (third-person singular simple present power-cycles, present participle power-cycling, simple past and past participle power-cycled)

power-cycles (present singular third-person)
power-cycling (participle present)
power-cycled (participle past)
power-cycled (past)

If the computer's frozen, try power-cycling it.

(electronics, computing) To turn a device off and then back on again, usually to restore proper function by forcing a malfunctioning or unresponsive device to reset or reinitialize, or as a step in troubleshooting the device.


hard error

(electronics, computing) A type of error which persists even after power-cycling the equipment; associated with permanent physical damage to the equipment's hardware (for instance, from a latch-up).


wobbulate

wobbulate (third-person singular simple present wobbulates, present participle wobbulating, simple past and past participle wobbulated)

wobbulates (present singular third-person)
wobbulating (participle present)
wobbulated (participle past)
wobbulated (past)

(electronics) To oscillate between two frequencies, typically by means of a wobbulator


wobbulation

en-noun

wobbulation (usually uncountable, plural wobbulations)

(electronics) oscillation between two frequencies, typically by means of a wobbulator


eFuse

(electronics) An on-chip microscopic fuse used to configure a circuit.


thin-film

(electronics) (of a circuit, electronic, etc.) Made with thin films deposited on a ceramic or glass substrate.


RFFE

(electronics, telecommunications) Initialism of radio frequency front end.


pseudochannel

LL-Q1860 (eng)-Flame, not lame-pseudochannel.wav

We may regard the signals to the three speakers as coming from three pseudochannels, having certain signal-to-crosstalk ratios. The ratios for each pseudochannel are those between the voltage, produced by a signal in the pseudochannel, across the intended speaker; and the voltages, produced by that same signal, across the other two speakers.

1961, IRE Transactions on Audio - Volumes 9-10, page 75:

All data to and from primary memory in the IBM/360 model 30 are transmitted over 8-bit (plus parity) data paths including the pseudochannels.

1986, G. W. Gorsline, Computer Organization: Hardware/software, page 250:

For the purpose of over-the-cell routing, the channel intersection graph is extended by pseudochannels.

2000, George Zobrist, VLSI Design Environments, page 31:

A pseudochannel gain is introduced to convert cooperative transmissions to virtual direct transmissions,” researchers in South Korea report.

2012, Issues in Transportation Research and Application, page 300:

The agents.conf file is used to define agents for queues using the agents channel. This channel is similar in nature to the other channel types in Asterisk (local, SIP, IAX2, etc.), but it is more of a pseudochannel in that it is used to connect callers to agents who have logged into the system using other types of transport channel.

2013, Russell Bryant, Leif Madsen, Jim Van Meggelen, Asterisk: The Definitive Guide: The Future of Telephony Is Now, page 349:

ENEOS can inject various stress and monitoring signals into a pseudochannel (e.g., the embedded operating channel of the SONET, the extended super frame data channel of T1 links, and the management channel of proprietary networks).

2017, Wayne C. Bradley, Handbook of Data Center Management:

(electronics, communication) Any data channel that is introduced as a theoretical pathway that does not correspond to a physical channel.


subsignal

(electronics) Any part of a signal that is formed by a combination from several sources


subraster

(electronics) A subset or subgrid of a raster.


octode

(dated, electronics) A thermionic valve that has eight electrodes or similar elements


double E

From having two Es in the initialism, thus doubled up.

electrical engineer
electrical engineer#English

(electrical engineering) Abbreviation of electrical engineer.

Alternative form of EE
Abbreviation of electrical engineer.

electrical engineering
electrical engineering#English

(electrical engineering) Abbreviation of electrical engineering.

Alternative form of EE
Abbreviation of electrical engineering.

(electrical engineering) Abbreviation of degree (diploma) in electrical engineering.


multiar

(electronics) A device which produces an output signal when a varying voltage applied at one input exceeds an adjustable constant voltage applied at another


peak shaving

(electricity) The management by a utility of its demand for electricity over time, to reduce spikes in usage.


time switch

A time switch with astronomical adjustment switches the warning signs on at sunset.

1939 November, “Pertinent Paragraphs: Traffic Lights at Crossings on Manx Electric Railway”, in Railway Magazine, page 361:

(electrical engineering) A switch activated automatically at a preset time.


alligator clamp

alligator clamp (plural alligator clamps)


BIPV

(electricity, construction) Initialism of building-integrated photovoltaic.


digital pre-distortion

digital pre-distortion (countable and uncountable, plural digital pre-distortions)

(electronics) A technique used to increase linearity or compensate for nonlinearity in power amplifiers.


single data rate

(electronics) A communication signaling technique that transfers data on either the rising edge or the falling edge of the clock signal.


octal data rate

(computing, electronics) A memory interface which performs eight bits per clock cycle per lane


From vehicle-to-load technology, the capability of battery electric vehicles to provide power to electric appliances.

(countable and uncountable, automotive, electricity) Abbreviation of vehicle-to-load.


uncrowbarred

(electronics) Not equipped with a crowbar circuit.


leakage current

leakage current (plural leakage currents)

(electricity) The current that flows through the grounding to earth.


cable joint

(electricity) Connection between two power cables with proper insulation and mechanical protection.


SBPS

(electricity) Initialism of standby power system/supply.


SAPS

(electricity) Initialism of stand-alone power system/supply.

(electricity) Initialism of standalone photovoltaic system/supply.


WCS

WCS (countable and uncountable, plural WCSs or WCSes)

Coordinate term: WTI

Western Canadian Select
Western Canadian Select#English

(finance, petroleum) Abbreviation of Western Canadian Select.; A grade of crude oil originating in Canada, used as a pricing benchmark.


thermal design power

(electronics) The maximum amount of heat generated by a computer chip or component which the cooling system in a computer is designed to dissipate under any workload.


resettable fuse

resettable fuse (plural resettable fuses)

(electronics) A passive electronic component used to protect against overcurrent faults in circuits.


multifuse

(electronics) Synonym of resettable fuse


surface-mount technology

Coordinate term: through-hole technology

(electronics) A method in which the electrical components are mounted directly onto the surface of a printed circuit board.


NSMD

(electronics) Initialism of non-solder mask defined.


solder mask

(electronics) A thin lacquer-like layer of polymer that is usually applied to the copper traces of a printed circuit board for protection against oxidation and to prevent solder bridges from forming between closely spaced solder pads.


solder stop

(electronics) The material of such a mask.


surface-mount

surface-mount capacitor

(electronics) Of electronic components, able to be soldered on top of printed circuit boards.

pintaliitos-

of electronic components, able to be soldered on top of printed circuit board

surface-mount assembly

(electronics) Pertaining or relating to the technology of soldering electronic components on top of printed circuit boards.

pintaliitos-

pertaining or relating to the technology


McIntire joint

(electrical) An electrical connection spliced together by means of a sleeve (double tube of copper for this purpose).


HLS

(automation, electronics) Abbreviation of high-level synthesis.


hourly rating

The year 1926 saw the putting in service of the first of the magnificent 1-Co-Co-1 locomotives of Type Ae 6/8, which at the time of their construction, with their hourly rating of 4,500 h.p., were the most powerful single electric locomotive units in the world.

1960 December, Cecil J. Allen, “Operating a mountain main line: the Bern-Lötschberg-Simplon: Part One”, in Trains Illustrated, page 743:

(electrical engineering, rail transport) A measure of the maximum output, usually expressed in horsepower, that can be obtained from the motors of an electric locomotive for a period of one hour without the motors overheating.


ring modulation

ring modulation (countable and uncountable, plural ring modulations)

So called because the analog circuit of diodes originally implementing this technique took the shape of a ring.

(electronics) A signal processing function in which two signals (typically a complex signal and a less complex carrier such as a sine wave) are combined to yield an output.


OPD

overcurrent protective device
overcurrent protective device#English

(electricity) Initialism of overcurrent protective device.


dead section

A new glass fibre insulating section will ultimately equip all neutral sections, simplifying maintenance work and greatly reducing the length of dead sections.

1962 March, “Talking of Trains: The future of B.R. a.c. traction”, in Modern Railways, page 148:

(rail transport, electrical engineering) Part of a neutral section.


magnetic strip

(electronics, computing) A strip of magnetic material on which data is stored for later retrieval and reading by an electronic device.


WTI

Coordinate term: WCS

West Texas Intermediate
West Texas Intermediate#English

(finance, petroleum) Abbreviation of West Texas Intermediate.; A grade of crude oil originating in Texas, used as a pricing benchmark.


one-cold

One-cold encoding has the same advantages and disadvantages as one-hot. The difference is that the active bit is logic zero rather than logic one. One-cold encoding is most useful for systems that have active-low enable signals.

2015, Ronald W. Mehler, Digital Integrated Circuit Design Using Verilog and Systemverilog, Elsevier, →ISBN, page 410:

(electronics, computer science) A set of bits with only a single low (0) bit, with the remaining bits high (1).


return current

The return current is fed from the transformer to the wheels through brushes on each axle of the motor coach.

1963 March, “The Clacton express electric multiple-units enter service”, in Modern Railways, page 174:

(electrical engineering) The electric current in a circuit which flows back to its source, or to earth.


toby box

(electronics) A box containing a service (fiber optic microducts, mains water, etc.) set into the street or verge for connection to a property, typically containing a shutoff valve to allow for maintenance at the connected property.


hot microphone

When the captain asked, "What's happening? What's happening?" at 0150:06, his words were not recorded by the hot microphone at the first officer's position; however, the hot microphone recorded the captain's subsequent remarks until it stopped recording cockpit conversation at 0150:25. (None of the relief first officer's comments during the accident sequence were recorded by the hot microphone. For additional information, see the section titled, "Audio Information Recorded by First Officer's Hot Microphone.")

2002 March 13, National Transportation Safety Board, “Events After the Command Captain Returned to the Cockpit”, in Aircraft Accident Brief: EgyptAir Flight 990, Boeing 767-366ER, SU-GAP, 60 Miles South of Nantucket, Massachusetts, October 31, 1999, archived from the original on 2022-05-11, page 62:

(electronics, especially aviation) A microphone that is activated (but not powered) by the sound of the user's voice, allowing it to pick up speech without having to be manually turned on, while still rejecting background noise unaccompanied by speech.


center tap

(electronics) A contact made to a point halfway along a winding of a transformer or inductor.


split-phase power

(electrical engineering) A type of electrical power distribution system using two line wires connected to the ends of a distribution transformer and a grounded neutral wire connected to the center tap of the transformer, allowing loads to be connected between line and neutral and receive the normal line voltage (120 or 240 volts), or between the two opposite-phase line wires and receive twice the normal line voltage (240 or 480 volts).


lost neutral

(electrical engineering) A dangerous situation where the neutral wire in a split-phase power system becomes broken or disconnected, forcing all electrical current to flow directly between the two line wires and exposing loads connected between line and neutral to unstable and potentially-excessive voltages, posing a risk of equipment damage, electrical fire, or electric shock.


purple plague

(chemistry, electronics) The brittle, bright-purple intermetallic compound AuAl₂, formed when gold and aluminium are heated while in direct contact (for instance, if a gold wire is bonded to an aluminium contact pad and experiences heating due to electrical resistance).

(electronics) The problems caused by the formation of this compound, including the formation of voids in the contact area and the potential for fracture of the gold-aluminium junction.


ACR

automatic circuit recloser
automatic circuit recloser#English

(electricity) Initialism of automatic circuit recloser.


IOT

inductive output tube
w:inductive output tube

(electronics) Initialism of inductive output tube.


flashover voltage

flashover voltage (plural flashover voltages)

(electricity) The voltage at which an electric discharge occurs between two electrodes that are separated by an insulator.


compand

en-verb

compand (third-person singular simple present compands, present participle companding, simple past and past participle companded)

compands (present singular third-person)
companding (participle present)
companded (participle past)
companded (past)

(electronics, transitive) To subject to a companding process.


load factor

(electrical engineering) The mean load over a given time period divided by the peak load occurring during the same time period, providing a measure of how efficiently an electric system's capacity is being used.


sand battery

(electronics, historical) An unspillable electrochemical battery whose cells use electrolyte soaked sand – typically used to test telegraph cables at sea.


battery pack

(electronics) A set of batteries or battery cells connected together to deliver a certain voltage, capacity, or power density, often with an integrated battery management system.

akusto

set of connected batteries or battery cells


two-way switch

en-noun

two-way switch (plural two-way switches)

Named after its two electrical connections.

(US, rare, electricity) A plain type of light switch that can control lights, or other electrical loads, from a single location; a single-throw switch.


two-way switch

Named after its use in pairs to control a load from two locations.

(British, electricity) Commonwealth spelling of (US): three-way switch.


intermediate switch

intermediate switch (plural intermediate switches)

(British, electricity) A light switch with two pairs of two terminals, which can be switched between straight-through or swapped wiring. Typically used as part of a circuit to control a light or other device from three or more locations. (US): four-way switch.


four-way switch

four-way switch (plural four-way switches)

Named after its four electrical connections.


overcurrent protective device

overcurrent protective device (plural overcurrent protective devices)

A ring final circuit starts and finishes at the distribution board, where it is connected to a 30A or 32A overcurrent protective device.

2008, Darrell Locke, Guide to the Wiring Regulations: 17th Edition IEE Wiring Regulations (BS 7671:2008), archived from the original on 2022-07-18, page 88:

(electricity) A device, usually a fuse, polyfuse, or circuit breaker, intended to detect and stop an overcurrent condition.


clock rate

clock rate (countable and uncountable, plural clock rates)

(electronics) The rate of clock pulses in an electronic circuit.


memistor

From memory + resistor, coined by Bernard Widrow in 1960.

(electronics) A resistor with memory able to perform logic operations and store information.


EaaS

EaaS (countable and uncountable, plural EaaS's or EaaSes)

(electricity, fuel) Initialism of energy-as-a-service.


rolling blackout

rolling blackout (plural rolling blackouts)

Authorities in California warned that the high demand could lead later this afternoon to an emergency order for rolling blackouts, a dreaded term here that brings reminders of widespread blackouts in 2003 during an energy supply crisis.

2006 July 23, Randal C. Archibold, “California Warns of Rolling Blackouts”, in The New York Times, →ISSN:

(electricity) An intentional disruption of electric service to different areas in a region to conserve power.


body contact

(electricity) A conductive connection between body and active parts of electrical equipment resulting from a fault.


pseudofinal

LL-Q1860 (eng)-Flame, not lame-pseudofinal.wav

From pseudo- + final, introduced in a paper by Abetti (1960).

Initial and pseudofinal voltage distributions

2007, Leonard L. Grigsby, Power Systems, pages 11–5:

(electrical engineering) Denoting a kind of steady-state voltage distribution.


power consumption

power consumption (countable and uncountable, plural power consumptions)

(electricity) The amount of power used multiplied by the amount of time, measured either in kilowatt-hours, horsepower-hours, etc.


horsepower-hour

(electricity) A unit of energy equal to the amount of work a horse is capable of delivering during an hour.


terawatt-year

(electricity) A unit of electrical energy equal to that done by one terawatt acting for one year.


mechanical horsepower

mechanical horsepower (countable and uncountable, plural mechanical horsepowers or mechanical horsepower)

mechanical horsepowers (plural)
mechanical horsepower (plural)

(electricity) A nonmetric unit of power approximately equivalent to 745.7 watts.


thermal horsepower

thermal horsepower (countable and uncountable, plural thermal horsepowers or thermal horsepower)

thermal horsepowers (plural)
thermal horsepower (plural)

(electricity) The horsepower of an electric motor, determined by the readings from a thermal-type ammeter.

(electricity) The amount of power a gearbox can convey without overheating when operating continuously for three hours or more; the amount of work that a drive can perform when operating at sea level.


solar power

(energy) The conversion of energy from sunlight into electricity, either directly using photovoltaics, indirectly using concentrated solar power, or a combination of the two.

sonkrag

the conversion of energy from sunlight into electricity


quartz crystal

quartz crystal (countable and uncountable, plural quartz crystals)

(electronics) A small crystal of quartz accurately cut in certain directions so that it can be vibrated at a particular frequency, to produce an electric signal of constant known frequency.


EROI

(economics, electricity) Initialism of energy return on investment.


digital signal processing

(electronics, technology) The use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations.


digital meter

(electronics) A type of measuring device which records the use of electricity and water, and which then electronically reports the usage to a utility company at regular intervals.


digital electronics

(electronics, technology) A field of electronics involving the study of digital signals and the engineering of devices that use or produce them.


axial lead

an axial-lead resistor

(electronics, chiefly attributive) An electrical component with two leads (wires) extending out in opposite directions (along a single axis).


squegger

(electronics) An irregular oscillator, one exhibiting squegging.


second source

(electronics) A company that is licensed to manufacture and sell electronic components originally designed by another company (the first source).


antimetry

(electronics) A property of an electrical network where the normalised impedance of one port is the reciprocal of another.


load voltage

(electronics) The voltage that is able to be supplied by a power source to be consumed by the electrical load.


solion

(electronics, historical) An electrochemical device of the 1950s, intended to replace the transistor in certain situations, and using ions rather than electrons to carry electrical charge.


arc blast

arc blast (countable and uncountable, plural arc blasts)

(electrical engineering) An explosion produced by the extreme heat of an uncontrolled high-energy electric arc.


arc flash

arc flash (countable and uncountable, plural arc flashes)

(electrical engineering) The extremely intense light and heat produced by a high-energy electric arc.


arc fault

(electrical engineering) An undesired and uncontrolled electric arc from one conductor through the air (or other gas) to a conductor at ground potential or a different voltage phase.


arc-fault circuit interrupter

arc-fault circuit interrupter (plural arc-fault circuit interrupters)

(electrical engineering) A type of circuit breaker that detects signs of potentially-dangerous arcing on downstream wiring and shuts off power to the affected branch circuit to reduce the risk of a fire.


ballout

(electronics) The pinout of a ball grid array integrated circuit.


PARD

This article describes a power supply conditioning circuit that can reduce Periodic And Random Deviations (PARD) on the output voltages of DC power supplies...

1987, “Power supply conditioning circuit”, in JPL DSN Progress Report 42-90, page 1:

(electronics) Acronym of periodic and random deviations, a form of electrical noise.


current divider

current divider (plural current dividers)

Coordinate term: voltage divider

(electronics) A simple electronic circuit which reduces an input current by a fixed factor using sources of impedance (such as resistors) connected in parallel.


TLM

TLM (countable and uncountable, plural TLMs)

transmission line matrix
w:Transmission-line matrix method

(electrical engineering)
Initialism of transmission line matrix.

transmission line model
w:transmission line model

(electrical engineering)
Initialism of transmission line model.

electrical engineering
electrical engineering

transfer length method
w:transfer length method

(electrical engineering)
Initialism of transfer length method.


nodal analysis

Kirchhoff's current law
Kirchhoff's current law

(electronics) A method of solving for the voltages of nodes in an electric circuit, in which a system of equations is written for the currents (using Kirchhoff's current law) at each node.


Thévenin's theorem

Derived in 1883 by French electrical engineer Léon Charles Thévenin; however, it had been independently derived in 1853 by German physicist Hermann von Helmholtz.

(electronics) A theorem which states that any electric circuit between two terminals containing only resistors, voltage sources, and current sources can be equivalently replaced with a single voltage source and resistor.

Hermann von Helmholtz
Léon Charles Thévenin
Thévenin's theorem


Norton's theorem

Derived by American engineer Edward Lawry Norton in 1926; however, it was independently derived on the same year by German physicist Hans Ferdinand Mayer (hence the alternative name Mayer-Norton theorem).

(electronics) A theorem which states that any electric circuit between two terminals containing only resistors, voltage sources, and current sources can be equivalently replaced with a single current source and resistor in parallel.

Edward Lawry Norton
Hans Ferdinand Mayer
Norton's theorem


mesh analysis

Kirchhoff's voltage law
Kirchhoff's voltage law

(electronics) A method of solving for the currents in an electric circuit, in which a system of equations is written for mesh currents (using Kirchhoff's voltage law) around each mesh (loop).


mesh current

(electronics) In mesh analysis: a construct representing a component of current associated with a particular mesh (loop); the real current on a wire is the sum of the (either positive of negative, depending on direction) mesh currents running through it.


essential mesh

essential mesh (plural essential meshes)

(electronics) In mesh analysis: a simple mesh (loop) which does not contain any other meshes.


supermesh

(electronics) In mesh analysis: a mesh (loop) which contains smaller essential meshes.


PoP

PoP (countable and uncountable, plural PoPs)

package on a package
w:package on a package

(electronics) Initialism of package on a package.


cyber transport systems

cyber transport systems pl (plural only)

(US, military, electronics) Synonym of computer networking


cyber transport system

cyber transport system (plural cyber transport systems)

(US, military, electronics) Synonym of computer network


cyber transport

(US, military, electronics) Synonym of networked (“computer networked”); pertaining to computer networks and computer networking


USART

w:universal synchronous and asynchronous receiver-transmitter

(electronics) Initialism of universal synchronous and asynchronous receiver-transmitter.


trimpot

(electronics) Short for trimmer potentiometer.


DIN connector

(electronics) A cylindrical connector consisting of circular pins protected by a circular wall.


pinch roller

(electronics) A rubber wheel that presses tape against a capstan.


CBDC

digital currency
digital currency#English

(finance, electronics, government) Abbreviation of central bank digital currency.


Sziklai pair

Named after George Clifford Sziklai (1909–1998), Hungarian-American electrical engineer.

(electronics) A configuration of two bipolar transistors, similar to a Darlington pair but having one NPN and one PNP transistor.


Darlington pair

Darlington pair (plural Darlington pairs)

(electronics) A pair of transistors with the emitter of one connected to the base of the other and the collectors connected together, acting as a transistor with greater amplification.


tapeout

(electronics) The point at which the design of an integrated circuit is completed and the photomask is sent out for fabrication.


misrun

misrun (countable and uncountable, plural misruns)

The experience of most drillstem testing companies indicates that the chance of a misrun in a poorly prepared hole is approximately 30 percent, whereas the chance of a misrun in a well-prepared hole has been cut down to roughly 15 percent.

1960, Petroleum Engineer for Management - Volume 32, page 41:

In this test, the pressure curve shows clearly that a seal was not affected; therefore, this is a misrun.

1965, Carl Gatlin, Petroleum Engineering: Drilling and Well Completions, page 266:

Follow Schlumberger procedures for recovering guns in the event of a misrun.

2000, S. McAleese, Operational Aspects of Oil and Gas Well Testing, page 277:

When the DST tool is set, if fluid does not stay at the surface on the outside of the hole or the drill pipe, then you have a misrun.

2015, Terry W. Piesker, Oil and Gas Business:

(petroleum engineering) A failed test of oil or gas drilling equipment.


red hydrogen

(energy) hydrogen produced by using the waste heat from nuclear reactors to power high-temperature catalytic splitting

pink hydrogen

hydrogen made by nuclear-powered electrolysis


belted cable

(electrical engineering) A 3-phase power cable whose conductors are bunched together and isolated with oil-impregnated insulating paper.


cross-bonding

(electrical engineering) A method to connect power cable by crossing the return conductors between phases to increase cable current rating and reduce electrical losses on the cable sheath.


cable core

(electricity) Central part or the innermost part of a power cable which carries electric current and is surrounded by various layers of insulation.


proximity effect

(electrical engineering) A condition when a power cable carrying electric current which is non-uniformly distributed due to the presence of other power cable or conductor nearby. This phenomena increases the apparent resistance of the power cable.


storage battery

storage battery (plural storage batteries)

After experiments, the Great Southern Railways of Ireland decided in 1930-31 to replace steam suburban trains between Dublin and Bray by two-car articulated sets operated by storage batteries of the type invented by Dr. Drumm, and four were built: the first went into service in 1932.

1949 September and October, “Notes and News: Drumm Battery System Scrapped”, in Railway Magazine, page 339:


SWER

(electricity) Initialism of single-wire earth-return.


SWER

SWER (countable and uncountable, plural SWERs)

single-wire earth-return
single-wire earth-return#English

(electricity) single-wire earth-return electrical system


HEI

HEI (countable and uncountable, plural HEIs)

hot-carrier injection
w:hot-carrier injection

(electronics) Initialism of hot-carrier injection.


connectorize

en-verb

connectorize (third-person singular simple present connectorizes, present participle connectorizing, simple past and past participle connectorized)

connectorizes (present singular third-person)
connectorizing (participle present)
connectorized (participle past)
connectorized (past)

Based on these requirements, the most practical bufferings for intrabuilding cabling are tight buffer and composite buffer. Both of these buffering designs are readily connectorized and offer small bend radii […]

1994, Fiber Optic Designs and Applications, page 26:

(electronics, transitive) To fit with connectors.


battery charger

en-noun

battery charger (plural battery chargers)

(electronics) A device that stores energy in a battery by running an electric current through it.


major appliance

major appliance (plural major appliances)

(electronics) A nonportable or semiportable machine used for routine housekeeping tasks such as cooking, washing laundry, or food preservation.


small appliance

small appliance (plural small appliances)

(electronics) A portable or semiportable machine, generally used on tabletops, countertops or other platforms, to accomplish a household task.


pullability

(electronics) The amount of change in frequency of a crystal oscillator in response to a change in load capacitance.


beltpack

(electronics) A radio transceiver worn on a belt and used in conjunction with headphones and microphone.


power-intensive

en-adj

power-intensive (comparative more power-intensive, superlative most power-intensive)

more power-intensive (comparative)
most power-intensive (superlative)


energy-intensive

energy-intensive (comparative more energy-intensive, superlative most energy-intensive)

more energy-intensive (comparative)
most energy-intensive (superlative)


selfie camera

(electronics, photography) A camera on the same side or surface of a smartphone as the main display, used for taking selfies and making video calls.


time-switch

en-verb

time-switch (third-person singular simple present time-switches, present participle time-switching, simple past and past participle time-switched)

time-switches (present singular third-person)
time-switching (participle present)
time-switched (participle past)
time-switched (past)

(transitive, electrical engineering, uncommon) To activate a switch automatically at a preset time.


first-order hold

en-noun

first-order hold (countable and uncountable, plural first-order holds)

digital-to-analog converter
digital-to-analog converter

(electronics, electrical engineering) A mathematical model of the practical reconstruction of sampled signals that could be done by a conventional digital-to-analog converter and an analog circuit called an integrator.


single-phase

(electricity) Using an alternating current in which all voltages supplied are in the same phase.


single-phase

en-verb

single-phase (third-person singular simple present single-phases, present participle single-phasing, simple past and past participle single-phased)

single-phases (present singular third-person)
single-phasing (participle present)
single-phased (participle past)
single-phased (past)

(electricity, by extension) To use such a current.


bus-holder

(electronics) A weak latch circuit that holds the last value on a tristate bus.


time-to-digital converter

en-noun

time-to-digital converter (plural time-to-digital converters)

(electronics) A device for recognizing events and providing a digital representation of the time they occurred.


envelope detector

envelope detector (plural envelope detectors)

(electronics) An electronic circuit that takes a relatively high-frequency amplitude modulated signal as input and provides as output the demodulated envelope of the original signal.


peak detector

envelope detector
envelope detector#English

(electronics) Synonym of envelope detector


time-aligned

(audio, electronics) Of a sound system, in which the speakers are configured correctly to eliminate timing problems, so that the sound produced by each driver arrives in the listener's ear at the same time.


time alignment

(audio, electronics) The process of delaying the sound emanating from one or more drivers in a loudspeaker or sound system to correct the transient response so that the sound output is simultaneous.


tristated

the data out drivers are tristated

1984, Northcon/84: Mini/Micro Northwest-84 Conference Record, page 8:

Even after the output enable signal is true, the output remains tristated until the senseamp's cross coupled latch has resolved the data value, […]

2012, Anantha P. Chandrakasan, Robert W. Brodersen, Low Power Digital CMOS Design, page 336:

(electronics) In a high-impedance state that is neither the high output state nor the low output state, and allows other devices to drive the bus without interference from the tristate buffer.


summator

(electronics) A logic circuit or other electronic device whose output is the sum of two or more input signals or values.


CPLD

complex programmable logic device
w:complex programmable logic device

(electronics) Initialism of complex programmable logic device.


low-powered

en-adj

low-powered (comparative lower-powered, superlative lowest-powered)

lower-powered (comparative)
lowest-powered (superlative)

(electricity, electronics) Possessing little power or capacity.


memory bank

(electronics) A hardware-dependent logical unit of storage in an electronic.


decade box

(electronics) A piece of test equipment used during prototyping of circuits to vary the resistance, capacitance, or inductance by means of a knob or switch.


Western Canadian Select

(finance, petroleum) A heavy sour blend of crude oil that is one of North America's largest heavy crude oil streams.


West Texas Intermediate

(finance, petroleum) A grade or mix of crude oil; also used to refer to the spot price, the futures price, or assessed price for that oil.


clearance time

en-noun

clearance time (countable and uncountable, plural clearance times)

In Fig. 12.5.6A, for example, a fault occurring at point F is detected by the busbar protection which trips the circuit breaker. It is clear, therefore, that the fault will not be disconnected, except possibly by back-up protection involving a long clearance time.

1995, Electricity Training Association, Institution of Electrical Engineers, Power System Protection, page 50:

The amount of time it takes from the initiation of a process until it is completed.

(electricity, electronics) The amount of time from when a fault is detected to when a circuit is automatically reopened.


fall time

fall time (countable and uncountable, plural fall times)

(electronics) The amount of time taken for the amplitude of a pulse to decrease from a specified value to another specified value.


rise time

rise time (countable and uncountable, plural rise times)

Coordinate term: fall time

(electronics) Of a voltage or current step function, the amount of time taken by a signal to change from a specified low value to a specified high value.


connect time

connect time (countable and uncountable, plural connect times)

(electronics) The amount of time that a circuit is in use, usually in a circuit-switched environment.


time-of-use meter

time-of-use meter (plural time-of-use meters)

(electricity) A device that measures and records the usage of electricity during a prespecified period of the day cumulatively over a meter reading period.


time-of-use rates

(electricity) A dynamic electric rate schedule that adjusts prices that are dependent on peak usage, as based on the time of day and season.


time-varying

(electricity, electronics) Referring to any voltage of a varying time, current or an electromagnetic wave carrying information.


time-frequency analysis

time-frequency representation
time-frequency representation

(electrical engineering, signal processing) A technique that studies a signal in both the time and frequency domains simultaneously, using various time-frequency representations.


signal processing

(electrical engineering) A subfield of electrical engineering focusing on analyzing, modifying and synthesizing signals, such as sound, images, potential fields, seismic signals, altimetry processing, and scientific measurements.


time-frequency representation

time-frequency representation (countable and uncountable, plural time-frequency representations)

(electrical engineering, signal processing) A view of a signal, taken to be a function of time, represented over both time and frequency.


frame-alignment recovery time

frame-alignment recovery time (uncountable)

(electronics, telecommunications) The amount of time that elapses between a valid frame alignment signal that is available at the receiving terminal equipment and the moment that frame alignment is established.


hold time

hold time (countable and uncountable, plural hold times)

Coordinate term: setup time

(electronics) The minimum amount of time for which the data input should be held steady after the clock event for reliable sampling.


transition time

transition time (countable and uncountable, plural transition times)

(electricity, electronics) The amount of time required for the switch output to settle within a given percentage of the final value following a change in the control input level.


storage time

storage time (countable and uncountable, plural storage times)

In this article, we report the first long-term measurements of storage time at room temperature.

1995, W. Xie, G.M. Johnson, Y.Wang, J.A. Cooper, Jr., J.W. Palmour, L.A. Lipkin, M.R. Melloch, C. H. Carter, Jr., “Cell Design and Peripheral Logic for Nonvolatile Random Access Memories in 6H-SiC”, in Herb Goronkin, Umesh Kumar Mishra, editor, Compound Semiconductors 1994, page 395:

Each device has its own storage time which may vary from device to device and again it varies with the magnitude of anode current .

2005, PC Sen, Modern Power Electronics, page 110:

Energy density and storage time are the key parameters to be considered when disucssing storage systems.

(electronics) The amount of time that an electronic device can store energy.


pulse repetition time

pulse repetition time (countable and uncountable, plural pulse repetition times)

(electronics, radio) The elapsed time from the beginning of one pulse to the beginning of the next pulse.


repetition time

repetition time (countable and uncountable, plural repetition times)

(radio, electronics) The amount of time from the application of an excitation pulse to the application of the next pulse.


propagation time

propagation time (countable and uncountable, plural propagation times)

(electronics, electrical engineering) In a digital circuit, the amount of time required for a signal or wave to travel from one point of a transmission medium to another.


standby time

standby time (countable and uncountable, plural standby times)

(electronics, telephony, technology) The maximum amount of time in which a mobile phone can be continuously turned on and ready to communicate.


setup time

setup time (countable and uncountable, plural setup times)

Coordinate term: hold time

(electronics) The minimum amount of time for which the data input should be held steady before the clock event for reliable sampling.


turn-off time

turn-off time (countable and uncountable, plural turn-off times)

Coordinate term: turn-on time

(electricity) The amount of time between the moment the anode current reaches zero and the moment the reverse voltage due to the practical circuit reaches zero.


turn-on time

turn-on time (countable and uncountable, plural turn-on times)

Coordinate term: turn-off time

(electricity) The amount of time required for a device to change from a forward blocking mode to a forward conduction mode when a gate pulse is applied.


integration time

integration time (countable and uncountable, plural integration times)

signal-to-noise ratio
signal-to-noise ratio

(electrical engineering) Of an electronic system, the period of time in which a noisy signal is averaged so as to improve the signal-to-noise ratio.


time-delay relay

time-delay relay (plural time-delay relays)

(electronics) A type of relay consisting of a built-in time delay function.


pumping time

pumping time (countable and uncountable, plural pumping times)

The setting time should never exceed the pumping time, and preferably should be about half of the total pumping time.

1971, ASTM International (publisher), Sampling of Soil and Rock, page 54:

Instantaneous discharge from aquifer storage does not occur, but storativity does approach a constant value with increasing pumping time.

2001, Michael Kasenow, Applied Ground-water Hydrology and Well Hydraulics, page 384:

Inclusion of a linear current booster (LCB) extends the useful pumping time of the pump motor and enables the use of a smaller motor and a smaller array that is utilized more efficiently.

2004, Roger A. Messenger, Jerry Ventre, Photovoltaic Systems Engineering, Second Edition, page 117:

(electronics, engineering) The amount of time a pump is in operation.


pull-up resistor

pull-up resistor (plural pull-up resistors)

LL-Q1860 (eng)-Flame, not lame-pull-up resistor.wav

(electrical engineering) A resistor that is connected between a signal and a positive voltage supply in a circuit to ensure that the signal is at a defined logic level.


time delay and integration clock

time delay and integration clock (plural time delay and integration clocks)

time delay and integration clocks (plural)

(electronics) A time delay device forming part of a readout integrated circuit.


Early effect

Named after American electrical engineer James M. Early who discovered the effect.

(electronics) The variation in the effective width of the base in a bipolar junction transistor due to a variation in the applied base-to-collector voltage.


Gunn effect

Named after British physicist J. B. Gunn who discovered the effect in 1962.

(electronics) The generation of high-frequency (usually microwave) oscillations within a semiconductor whenever an applied DC voltage exceeds its threshold value.


clock skew

(electronics) A phenomenon in synchronous digital circuit systems in which the same sourced clock signal arrives at different components at different times due to gate or wire signal propagation delay.


memory effect

(electronics) The situation in which nickel-cadmium rechargeable batteries gradually lose their maximum energy capacity if they are repeatedly recharged after being only partially discharged.


Miller effect

Named after John Milton Miller who discovered the effect.

(electronics, electrical engineering) The increase in the equivalent input capacitance of an inverting voltage amplifier due to amplification of the effect of capacitance between the amplifier's input and output terminals.


Armstrong oscillator

Armstrong oscillator (plural Armstrong oscillators)

(electronics) An electronic oscillator circuit which uses an inductor and capacitor to generate an oscillation.


Meissner oscillator

Meissner oscillator (plural Meissner oscillators)

Armstrong oscillator
Armstrong oscillator#English

(electronics, less common) Synonym of Armstrong oscillator


let through

en-verb

let through (third-person singular simple present lets through, present participle letting through, simple past and past participle let through)

lets through (present singular third-person)
letting through (participle present)
let through (participle past)
let through (past)

(electricity, of a surge protector) To allow an amount of voltage to pass through to the attached equipment.


time-domain reflectometer

en-noun

time-domain reflectometer (plural time-domain reflectometers)

(physics, electronics) An electronic instrument used to determine the characteristics of electrical lines by observing reflected pulses.


time-domain reflectometry

(physics, electronics) A technique used to track faults in networks, such as cable breaks or loose connections, in which a pulse of a known shape is transmitted over the network and an echo is created when the pulse strikes an obstacle or cable end.


frequency domain

frequency domain (plural frequency domains)

(mathematics, physics, electronics) The analysis of mathematical functions or signals with respect to frequency, and possibly a phase, rather than time.


PGND

(electronics) Abbreviation of power ground.


on silent

(electronics, mobile telephony) A setting on an electronic device that prevents it from producing noise when it receives a call or a message, such as an alert or a notification.


line drop

(electricity) A drop in voltage between two points of a transmission line.


tech giant

(electronics, business, often in the plural) A large company or corporation which works in the technology industry.


tag strip

(electronics) Solder tags/lugs on a strip used to connect wires by soldering.

terminal strip

Mostly used with strips using screws to establish the connection.


logic level

LL-Q1860 (eng)-Flame, not lame-logic level.wav

(electronics) One of a finite number of states (usually two) that a digital signal can have.


logic high

LL-Q1860 (eng)-Flame, not lame-logic high.wav

(electronics) In binary logic, one of the two levels that a signal can have.


logic low

LL-Q1860 (eng)-Flame, not lame-logic low.wav


pull-down resistor

pull-down resistor (plural pull-down resistors)

LL-Q1860 (eng)-Flame, not lame-pull-down resistor.wav

(electronics) A resistor that is connected between a signal and ground in a circuit to ensure that the signal is at a low logic level.


honeycomb coil

(electricity) A type of coil structure used in electrical wire winding, in order to reduce capacitive effects.


mica insulator

(electronics) A sheet of electric insulator material made from mica placed between a power semiconductor device and the heat sink.


cavity magnetron

cavity magnetron (plural cavity magnetrons)

particle accelerator
particle accelerator

(electronics) A high-power vacuum tube used in early radar systems and subsequently in microwave ovens and in linear particle accelerators.


jump wire

(electronics) An electrical wire with connector pins at each end that connects two points without soldering.


rotary converter

rotary converter (plural rotary converters)

It was decided therefore to change over from 25-cycle rotary converters to remotely-controlled substations supplied at 50 cycles, in conformity with the outer area electrification.

1954 April, “Southern Region Power Supply”, in Railway Magazine, pages 221-222:

electrical engineering
electrical engineering

(electrical engineering, dated) A machine which converts alternating current to direct current, or vice versa.


adder-subtractor

(electrical engineering) A circuit that is capable of adding or subtracting binary numbers.


helioelectricity

(electricity) A form of electric power that is generated or harnessed by the rays of the sun.


Video 2000

(electronics, historical) A video recording format and playback system that used magnetic tape cassettes.


glomper

Static or dynamic testing is greatly simplified with an IC Glomper clip such as the one shown in Fig. 1-9. These clips snap onto an IC and bring out pins for easy testing.

1974, Don Lancaster, TTL Cookbook, Howard W. Sams & Co., Testing and Monitoring States, page 27:

Enhancement one is so easy that it sticks out like a sore thumb. Directions are given for building two kinds of "glompers." А glomper is designed to simplify the hookup between your Apple and a television set.

1983 August 13, Timothy Daniel, “Enhancing Your Apple II, Vol. 1”, in Incider, volume 1, number 8, page 157, column 2:

Here the test leads are attached to a "glomper clip.'" which is clipped onto one of the major ICs in the test circuit.

1989, Douglas V. Hall, “Latches, Flip-Flops, Counters, and Logic Analyzers” (chapter 8), in Digital Circuits and Systems, McGraw-Hill Publishing, Logic Analyzers, page 219:

Also known as a ‘glomper clip’ (where do they get these names from?), this little gadget is like having a handful of logic probes, though in a much more compact form. In use it clips over the IC and connects to all of the pins of the IC at the same time.

1993 June 13, “The Logic Clip”, in The Maplin Magazine, volume 12, number 66, page 63, column 1:

Another interesting but pricey new development is a new flexible current transducer. Instead of a clamp-around glomper, you’ ve got this rope-shaped transducer which could get carefully worked around your individual wires in comfined spaces.

1997 June 13, Don Lancaster, “Some New Current Sensors”, in Tech Musings, page 137.4, column 2:

(electronics, obsolete) A logic clip; a device that clips to a dual-in-line (DIL) integrated circuit.