FM Receiver muting range setting circuit

Details FM Receiver muting range setting circuit FM Receiver muting range setting circuit

1978-10-30

1980-04-22

Bookbinder, Marc E.

Telecommunications

Receiver or analog modulated signal frequency converter

Frequency or phase modulation

455218, H04B 110

Patent

active

041997255

ABSTRACT:
A muting range setting circuit for an FM receiver uses a pair of differential amplifiers. Each of the differential amplifiers employs the same transistors having like polarity with common input and output terminals. The output of the tuner AFC is compared with an input reference voltage in the differential amplifier circuit and the output representing the frequency deviation of the FM detecting circuit is applied to the gate driving circuit for control of the muting operation.

REFERENCES:
patent: 2513786 (1950-07-01), Crosby
patent: 2589711 (1952-03-01), Lacy
patent: 2844713 (1958-07-01), Zuckerman
patent: 3569633 (1971-03-01), Brahman

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