Amplifier circuit

Details Amplifier circuit Amplifier circuit

1986-04-14

1987-12-29

Mullins, James B.

Amplifiers

Signal feedback

Potentiometer common to signal and feedback path

330146, H03F 134

Patent

active

047163780

ABSTRACT:
An amplifier circuit for use, e.g., in audio appliances, comprises two amplifiers; a first amplifier for controlling the output voltage, and a second amplifier for driving output electric current. An impedance circuit is connected to both outputs of the first and second amplifiers. Thus, the amplifier circuit accurately controls output electric power in response to the input signal and yet providing sufficient electric current for driving a speaker.

REFERENCES:
patent: 4283683 (1981-08-01), Main
Walker et al, "Current Dumping Audio Amplifier", Wireless World, Dec. 1975, pp. 560-562.

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