Amplifier having different low-frequency and high-frequency feed

Details Amplifier having different low-frequency and high-frequency feed Amplifier having different low-frequency and high-frequency feed

1978-02-02

1980-01-15

Martin, John C.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

330260, 330292, 330294, 330293, H04N 514, H03F 345, H03F 134

Patent

active

041841760

ABSTRACT:
A feedback amplifier, particularly suitable for use in the video output circuit of a television receiver, has an amplifying circuit, for example, in the form of a differential amplifier, a first feedback circuit for negatively feeding back to the input of the amplifying circuit a low frequency component of the output signal from the amplifying circuit, and a second feedback circuit having substantially the same feedback ratio as the first feedback circuit but being operative to negatively feedback to the input of the amplifying circuit a high frequency component of the output signal.

REFERENCES:
patent: 3676790 (1972-07-01), Beurrier
patent: 3983505 (1976-09-01), Ishigaki et al.
patent: 4069459 (1978-01-01), Lee
Lefkowitz, "Transistor AC Amplifier Uses Multiple Feedback", Electronics (Engineering Edition), May 23, 1958, pp. 84, 85.

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