Class A
Class A all of the input signal (100%) is used (a = 360 °).
Class B
Class B Half signal (50%) is used (a = 180 °).
Class AB
Class AB More than half but not the whole signal (50-100%) is used (180 ° <a <360 °).
Class C
Class C Less than half (0-50%) signal is used (0 <a <180 °).
(Encore en construction)
First family
