Unit 8: BJT Class B Power Amplifiers

Learning Objectives

After completing this chapter, you should be able to:

  • Define class B operation.Determine AC load lines for class B amplifier stages.
  • Determine the compliance, maximum load power, efficiency and required device ratings for class B circuits.
  • Discuss the advantages and disadvantages of class B operation versus class A operation.
  • Discuss the origin of notch distortion and methods used to mitigate it.
  • Explain the operation of a current mirror.
  • Explain the operation of a Sziklai pair.
  • Explain the operation and use of a VBE multiplier.
  • Outline the operation of fully complimentary and quasi complimentary output stages utilizing direct coupled driver stages.
  • Discuss methods to protect the output devices from overload.

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Semiconductor Devices: Theory and Application Copyright © 2023 by James M. Fiore is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.

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