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Which of the following is used as a voltage regulator?(a) Photodiode(b) Solar cell(c) LED(d) Zener diodeThis question was addressed to me during an online exam.My query is from Semiconductor Electronics in chapter Semiconductor Electronics : Materials, Devices and Simple Circuits of Physics – Class 12

Answer»

Right choice is (b) Solar cell

Easiest explanation: Zener diode was INVENTED by Clarence Melvin Zener. It is designed to OPERATE under reverse BIAS in the BREAKDOWN region and is used as a voltage regulator. It is designed to allow current to flow BACKWARD.



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