Definition of phototransistor in English:

phototransistor

noun

  • A transistor that responds to light striking it by generating and amplifying an electric current.

    • ‘The output phototransistor features a 30 V collector-emitter voltage and 5 V in the opposite direction.’
    • ‘It contains an infrared light-emitting diode as a light source and a phototransistor as a light detector.’

Pronunciation

phototransistor

/ˌfōdōˌtranˈzistər/