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Electronic Devices & CircuitsPower Amplifiers

Crossover distortion in a class-B push-pull amplifier occurs mainly near?

  • AThe zero crossing of the output waveform
  • BThe positive supply rail only
  • CThe highest input frequency only
  • DDC cutoff frequency only
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Correct Answer: A. The zero crossing of the output waveform
Explanation: Near zero crossing, neither transistor may conduct until the input exceeds the required base-emitter threshold, producing a dead zone and crossover distortion.
Reference: Standard analog electronics: class-B crossover distortion
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