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Which of the following is actually not a function of emitter bypass capacitor?(a) Increase gain(b) Lower the impedance of emitter resistance(c) Provide a low reactance path(d) Help emitter resistance to withstand voltage variationThe question was posed to me during a job interview.The doubt is from Characteristics of Amplifier topic in division Transistor Biasing and Low Frequencies of Analog Circuits

Answer»

Correct OPTION is (d) Help emitter RESISTANCE to withstand VOLTAGE variation

Best explanation: The emitter bypass capacitor is not meant for reducing loading effect of emitter resistance. It is to increase gain. It provides a low REACTIVE path to the AC signal WITHOUT changing the quiescent point.



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