Tone controller

Details Tone controller Tone controller

1976-10-28

1978-08-15

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

179 1D, 330103, 330108, 330109, 330294, H03F 304

Patent

active

041076222

ABSTRACT:
A feedback resistor is interposed between a reversing input terminal of an audio amplifier and at least one impedance circuit. The impedance circuit is connected to an output terminal of the amplifier to receive an amplified audio signal from the amplifier. The signal controlled in its frequency characteristic in the impedance circuit. A fraction of the signal is negatively fed back to the amplifier through a feedback resistor.

REFERENCES:
patent: 3643173 (1972-02-01), Whitten
patent: 3683293 (1972-08-01), Matsui
patent: 3914716 (1975-10-01), Kurata

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