Class BC power amplifier

Details Class BC power amplifier Class BC power amplifier

1981-04-29

1985-01-15

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including particular power supply circuitry

330263, H03F 330

Patent

active

044940785

ABSTRACT:
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.

REFERENCES:
patent: 3319175 (1967-05-01), Dryden
Feldman, "Class G High Efficiency Hi-Fi Amplifier", Radio-Electronics, Aug. 1976, pp. 47-49, 87.

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