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Analog ElectronicsTransistor Amplifiers

A common-collector amplifier is particularly useful as a?

  • AHigh-voltage-gain stage
  • BBuffer and impedance-matching stage
  • CRectifier
  • DHigh-frequency oscillator only
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Correct Answer: B. Buffer and impedance-matching stage
Explanation: The emitter follower has high input resistance, low output resistance and voltage gain near unity.
Reference: Standard analog electronics: transistor amplifiers
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