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What does asymmetrical clipping indicate about a stage?

  • A.The load impedance is lower than the design intended
  • B.The emitter bypass capacitor has lost most of its value
  • C.The driving source impedance is higher than expected
  • D.The operating point is off centre

Answer: D

Clipping on one side well before the other means the quiescent point is nearer one extreme of the load line than the other, so one direction of swing runs out first. Load impedance, bypass capacitance and source impedance all affect gain and response rather than producing this asymmetry. The shape of a distorted waveform carries information about its cause, and this is the clearest example of it.

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