| 摘要 |
A class BC power amplifier having a symmetrical push-pull preamplifier and a pair of symmetrical branches coupled, respectively, to the outputs of said push-pull preamplifier. Each of said branches includes a first power stage, operating in class B, coupled to the output of said branch, a control stage coupled to the respective output of said push-pull preamplifier for controlling said first power stage, a second power stage, operating in class C, coupled to said first power stage, and a first comparative stage coupled between said control stage and said branch output for controlling said second power stage. Each branch of said power amplifier further comprises a third power stage, operating in class C, also coupled to said first power stage, and a second comparative stage coupled between said control stage and said branch output for controlling said third power stage.
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