Definition of phototransistor in English:

phototransistor

Syllabification: pho·to·tran·sis·tor
Pronunciation: /ˌfōtōˌtranˈzistər
 
/

noun

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