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Can the voltage gain of a follower stage be greater than 1?

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Can the voltage gain of a follower stage be greater than 1?

(a) Yes, by changing the transconductance

(b) No

(c) Yes, by changing the bias current

(d) Yes, by changing the supply rail

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This is a very interesting question from MOSFET Amplifier with CD Configuration topic in division FET Amplifiers of Analog Circuits

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The correct answer is (b) No

Best explanation: The voltage gain of the follower stage readily tells us that it can never be used as an amplifier. It can only be used as a buffer.

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