Amplifier having maximum summed power output from a plurality of

Details Amplifier having maximum summed power output from a plurality of Amplifier having maximum summed power output from a plurality of

1990-03-28

1992-02-04

Isen, Forester W.

Electrical audio signal processing systems and devices

With amplifier

330151, H03F 2100

Patent

active

050864742

ABSTRACT:
A first amplifier is configured for accepting a signal input and providing a drive signal to a load. A second amplifier is configured in a voltage follower configuration with an input derived from the output of the first amplifier. The output of the second amplifier is coupled in parallel with the first to the load. The output from the second amplifier is nearly an exact duplicate of the output from the first amplifier, and the output contributions from the two amplifiers are therefore substantially equal. Isolation resistors are provided in series with the load and the respective output terminals of the amplifiers for protecting the operational amplifiers from adverse loading conditions.

REFERENCES:
patent: 3970953 (1976-07-01), Walker et al.
patent: 4396949 (1983-08-01), Meguro et al.
patent: 4517602 (1985-05-01), Murphy, III et al.
patent: 4549179 (1985-10-01), Stendardo
patent: 4739280 (1988-04-01), Noro
Jung, Walter G., IC Op-Amp Cookbook, Howard W. Sams & Co., Inc., 1974, pp. 316-317.

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