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What is the voltage gain of a high frequency response of emitter follower amplifier?

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What is the voltage gain of a high frequency response of emitter follower amplifier?

(a) 1

(b) β

(c) ∞

(d) 0

This question was posed to me at a job interview.

The above asked question is from High-Frequency Response of the Emitter Followers in chapter Frequency Response of Electronic Devices & Circuits

1 Answer

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Correct choice is (a) 1

To explain: The voltage gain of a high frequency response of emitter follower amplifier configuration is roughly equal to unity. AV is approximately equal to 1. This is due to the relatively high input impedance and low output impedance.

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