Discussion
How is crossover distortion removed?
Answer: D
Giving each device a small quiescent current so that both conduct near the zero crossing turns class B into class AB and closes the gap in the transfer characteristic. Supply voltage, load impedance and shunt capacitance do nothing about it. The cost is a little standing dissipation and a small loss of efficiency, which is why nearly every practical audio output stage is class AB rather than either pure class.
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