Definition of phototransistor in English:

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phototransistor

Pronunciation: /ˌfōdōˌtranˈzistər/

noun

A transistor that responds to light striking it by generating and amplifying an electric current.
Example sentences
  • It contains an infrared light-emitting diode as a light source and a phototransistor as a light detector.
  • The output phototransistor features a 30 V collector-emitter voltage and 5 V in the opposite direction.
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