"autotransformer" meaning in English

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  "etymology_text": "From auto- + transformer.",
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  "lang_code": "en",
  "pos": "noun",
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          "name": "Electrical engineering",
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        {
          "ref": "1990, Vincent Del Toro, chapter 2, in Basic Electric Machines, →ISBN, page 89:",
          "text": "One of the principal features of the ordinary configurations of the transformer [...] is the electrical isolation that exists between the primary and secondary windings. [...] Whenever large transformation ratios are involved, safety demands that ordinary transformers be used. However, in instances where the transformation ratio is close to unity (which minimizes the hazard), a transformer employing a single tapped winding may be used with notable advantages.\n[...] This arrangement is called the autotransformer.",
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        "A transformer with a single winding, its output being taken from taps."
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          "electrical engineering",
          "electrical engineering"
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        [
          "transformer",
          "transformer"
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        [
          "winding",
          "winding"
        ],
        [
          "tap",
          "tap"
        ]
      ],
      "raw_glosses": [
        "(electrical engineering) A transformer with a single winding, its output being taken from taps."
      ],
      "synonyms": [
        {
          "word": "balancing coil"
        },
        {
          "word": "compensator"
        }
      ],
      "topics": [
        "business",
        "electrical",
        "electrical-engineering",
        "electricity",
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        "energy",
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        "physical-sciences",
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      "translations": [
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "Spartransformator"
        },
        {
          "code": "de",
          "lang": "German",
          "sense": "Translations",
          "tags": [
            "masculine"
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          "word": "Autotransformator"
        },
        {
          "code": "pl",
          "lang": "Polish",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "autotransformator"
        },
        {
          "code": "ru",
          "lang": "Russian",
          "roman": "avtotransformátor",
          "sense": "Translations",
          "tags": [
            "masculine"
          ],
          "word": "автотрансформа́тор"
        }
      ],
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        "autotransformer"
      ]
    }
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  "word": "autotransformer"
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  "etymology_text": "From auto- + transformer.",
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        "(electrical engineering) A transformer with a single winding, its output being taken from taps."
      ],
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  "synonyms": [
    {
      "word": "balancing coil"
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      "word": "compensator"
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  ],
  "translations": [
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      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "Spartransformator"
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    {
      "code": "de",
      "lang": "German",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "Autotransformator"
    },
    {
      "code": "pl",
      "lang": "Polish",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "autotransformator"
    },
    {
      "code": "ru",
      "lang": "Russian",
      "roman": "avtotransformátor",
      "sense": "Translations",
      "tags": [
        "masculine"
      ],
      "word": "автотрансформа́тор"
    }
  ],
  "word": "autotransformer"
}