High-fidelity audio frequency amplifier

Details High-fidelity audio frequency amplifier High-fidelity audio frequency amplifier

1983-11-17

1985-11-26

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330265, 330266, 330268, H03F 330

Patent

active

045556725

ABSTRACT:
A high frequency audio amplifier in which the positive and negative bias ports of an operational amplifier are employed to drive two oppositely phased current mirror circuits. Additionally, the outputs of the current mirror circuits are current regulated in terms of the number of base emitter voltage drops in power amplifier circuitry following the current mirrors. Further, the output stage employs parallel connected radio frequency type transistors.

REFERENCES:
Oberhaus, "HiFi-Stereo-Endverstarker", Funkschau, 14/1981, pp. 58-61.
Schmidt, "Current Dumping Amplifier", Elektor, Jul./Aug. 1979, pp. 7-37.
Terrell, "Linear Power Amplifier", IBM Technical Disclosure Bulletin, vol. 21, No. 3, Aug. 1978, pp. 1226-1227.

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