1.

Optocoupler consists of a phototransistor and a led.(a) True(b) FalseI had been asked this question in a job interview.My question is taken from Photoelectric Transducers topic in chapter Transducers of Electrical Measurements

Answer»

Correct option is (a) True

The best explanation: The optocoupler consists of a phototransistor and an infrared EMITTING DIODE. Wavelength of the emitting and receiving diodes MUST be MATCHED in ORDER to get a proper output.



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