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Insulated-gate bipolar transistor (IGBT)

Cross section of a typical IGBT cell. The illustration is not to scale.

Insulated-gate bipolar transistor (IGBT)   The insulated-gate bipolar transistor (IGBT) is a three-terminal power semiconductor device primarily used as an electronic switch which, as it was developed, came to combine high efficiency and fast switching. It switches electric power in many modern appliances:variable-frequency drives (VFDs), electric cars, trains, variable speed refrigerators, lamp ballasts, air-conditioners and even …

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