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Introduction

 

42284.png 

Block diagram of audio amplifier

 

The feedback in amplifiers gives better performance in different ways such as

  1. Increased stability in the amplification. (the gain is less dependent on device parameters)
  2. Higher input impedance
  3. Lower output impedance
  4. Feedback reduces distortion in the amplifier
  5. Bandwidth of the amplifier is increased (improved frequency response)
  6. Linear operation over a wide range

 





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