Radio Amateur Quiz Canadian License

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Question A-002-007-010

The FET amplifier common drain circuit is similar to which of the following bipolar transistor amplifier circuits?

Correct Answer

Common collector

Explanation

The common-drain (CD) FET amplifier (source follower) is analogous to the common-collector (CC) BJT amplifier (emitter follower), both offering high input impedance, low output impedance, and no voltage gain (voltage follower).

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