Linear sound amplifier circuit

Details Linear sound amplifier circuit Linear sound amplifier circuit

1977-02-03

1977-11-01

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330266, 330295, 330143, H03F 318

Patent

active

040567834

ABSTRACT:
A Class AB linear power amplifier circuit is connected in a balanced bridge configuration for increasing the fidelity and power output from stereophonic sound systems, such as used primarily in automotive vehicles, the circuitry consisting of a series of NPN transistors and PNP transistors, with bias for the transistors provided by a power source, a series of resistors and thermistors, an optional input overload protection circuit, with the transistors further being matched and balanced so as to effectively double or quadruple output power as would be available from a single ended configuration, so that the amplifier circuitry operates in a Class A mode to eliminate any crossover distortion.

REFERENCES:
patent: 3195065 (1965-07-01), Grant
patent: 3258704 (1966-06-01), Wittman

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