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How is the output impedance of a high frequency response of emitter follower amplifier?

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How is the output impedance of a high frequency response of emitter follower amplifier?

(a) Irrelevant

(b) Moderate

(c) Low

(d) High

This question was posed to me during an interview.

This question is from High-Frequency Response of the Emitter Followers in division Frequency Response of Electronic Devices & Circuits

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Best answer
The correct answer is (c) Low

To explain I would say: The structure of a high frequency response of emitter follower circuit is roughly comparable to a normal amplifier. The low output impedance is one of the most prominent differentiating feature of a high frequency response of emitter follower circuit.

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