Interference suppression circuit for automobile radio receivers

Details Interference suppression circuit for automobile radio receivers Interference suppression circuit for automobile radio receivers

1975-07-09

1976-11-30

Habecker, Thomas B.

325478, H04B 110, H04B 1500

Patent

active

039952193

ABSTRACT:
A pulse amplifier with its input across the power supply leads to an automobile radio receiver to be protected against pulse interference is used to operate a blanking gate interposed between the demodulator of the receiver and the low-frequency circuits thereof. One of the power supply leads is grounded to the vehicle body. A resistor in the ungrounded lead increases the sensitivity of the pulse interference suppression circuit without impairing receiver operation. The circuit provides interference suppression that is not dependent upon the receiver band width and therefore usable both for AM reception and for FM reception.

REFERENCES:
patent: 2136659 (1938-11-01), Wood
patent: 2549671 (1951-04-01), Dana
patent: 3137817 (1964-06-01), Sheffet
patent: 3569840 (1971-03-01), Tanaka

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