Class B power amplifier
The class B amplifier is biased at cutoff. No current will flow until an input signal provides the bias to turn on the amplifier.
Only one half of the input signal is amplified. Two transistors can be operate in class B together in one circuit, one transistor for the positive portion of the signal and one transistor for the negative portion of the signal (Push Pull):
Problem: Crossover distortion, the emitter diode takes 0,7V to turn on.
Application: High power stages, not used in audio applications.
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