Electronic Devices and Circuits

Q1: The emitter follower is widely used in electronic instrument because

A its voltage gain is less than unity

B its voltage gain is very high

C its O/P Impedance is low and input impedance is high

D its O/P Impedance is high and I/P impedance is low

ANS:C - its O/P Impedance is low and input impedance is high

The answer is D. Emitter follower High i/p impedance and low o/p impedance.



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