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design a class B buffer

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sharathac13

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What are the parameters considered to design a class b buffer.
 

  • Supply voltage
  • Bandwidth
  • Input voltage range
  • Input impedance
  • Output impedance
  • Output load
  • Take-over distortion
 
Thanks a lot for your reply. can you please tell me how to get take over distortion.
 

... how to get take over distortion.

You'll get it automatically, because you can't totally avoid take-over distortion with class B amplifiers. The question is how to minimize it: you need to bias both class B stage transistors as close as possible to their onset voltages, i.e. close to the points where their individual currents start to flow. As these bias points depend strongly on temperature, the design art is to well control and keep these onset bias points vs. temperature changes.
 

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