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Analog Electronic Circuits

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Transistor Amplifier

Question
17 out of 24
 

What is the effect of bypass capacitor on voltage gain of an amplifier?

 

The emitter bypass capacitor is connected across emitter resistance RE. At mid-frequency and high frequency, bypass capacitor provides very small capacitive reactance and this capacitor behaves as short circuit. Hence, RE is bypassed and bypass capacitor has no effect on voltage gain. At low frequency, capacitive reactance of a bypass capacitor has significant value and there is some voltage drops across RE and CE and voltage gain is reduced.

 

Transistor Amplifier Flashcard List

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