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Input signal of common drain amplifier is applied to the gate through ________

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Input signal of common drain amplifier is applied to the gate through ________

(a) input resistor

(b) coupling capacitor

(c) output capacitor

(d) transformer

The question was posed to me during an online exam.

Origin of the question is A Generalized FET Amplifier topic in division Field-Effect Transistors of Electronic Devices & Circuits

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The correct choice is (b) coupling capacitor

Easy explanation: A common-drain amplifier is also called a source-follower. Self-biasing is used in this particular circuit. The input signal is applied to the gate through a coupling capacitor, and the output signal is coupled to the load resistor through the other capacitor.

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