Multi-channel audio power amplifier

Details Multi-channel audio power amplifier Multi-channel audio power amplifier

1980-05-07

1982-08-24

Mullins, James B.

Amplifiers

Modulator-demodulator-type amplifier

330126, 330295, H03F 338, H03F 368

Patent

active

043463495

ABSTRACT:
A multi-channel audio power amplifier is arranged to amplify, by an analog amplifying circuit, high frequency range components of an audio signal and to amplify low frequency range components of said signal by a class D amplifying circuit, to thereby enhance the power efficiency of the amplifier. The carrier frequency of the class D amplifying circuit is set lower than that employed conventionally, to eliminate spurious radiation of the carrier signal.

REFERENCES:
patent: 4240036 (1980-12-01), Kohler

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