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Electronic Devices & CircuitsPower Amplifiers

The maximum theoretical efficiency of an ideal class-B push-pull power amplifier is approximately?

  • A25%
  • B50%
  • C78.5%
  • D100%
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Correct Answer: C. 78.5%
Explanation: The ideal maximum efficiency of a class-B push-pull amplifier is pi/4, or approximately 78.5%.
Reference: Standard analog electronics: class-B efficiency
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