gofar99 Messages: 1949 Registered: May 2010 Location: Southern Arizona
Illuminati (5th Degree)
Hi, Simple and dirty description follows.
You can also can have class A push pull amps. All my power amp designs fall into this class.
Class A amps have power flowing though the output devices (transistors, tubes) all the time.
Class B amps have the output devices running at 1/2 of each cycle of power. One device will be on while the other is off. '
Class AB has class A operation at low power and goes to B at higher levels
Class C is less than 50% on each output device (can be a single device as in transmitter output stages).
Other classes are not consistently defined. Class D , T, and H are made up with high frequency switching devices. The pulses are summed to obtain the audio output.
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