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The___________ configuration is used frequently for impedance matching.

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The___________ configuration is used frequently for impedance matching.

(a) fixed bias

(b) voltage- divider

(c) emitter follower

(d) collector feedback

This question was posed to me during an online interview.

The above asked question is from CE Amplifier with an Emitter Resistance in division Low Frequency Transistor Amplifier Circuit of Electronic Devices & Circuits

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Correct choice is (c) emitter follower

The best explanation: The emitter follower configuration is mostly used as a voltage buffer. These configurations are extensively used in impedance matching applications because of their high input impedance.

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