Tuners – Tuner unit with electromagnetic operator – Predetermined center frequency selector
Patent
1975-02-21
1976-07-06
Griffin, Robert L.
Tuners
Tuner unit with electromagnetic operator
Predetermined center frequency selector
325453, 325470, 325471, 334 16, H04B 134
Patent
active
039684423
ABSTRACT:
A tuning circuit in which when the field strength of a received signal drops out, a tuning voltage from a switch can be applied to a capacitor so that the circuit stays tuned to the received signal. The voltage at the capacitor can further be controlled from a finding signal generator so that a station finding action which is independent of the inertia of the servo control can take place.
REFERENCES:
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patent: 2777054 (1957-01-01), Dahlberg, Jr.
patent: 2847567 (1958-08-01), Jacobsen
patent: 2856519 (1958-10-01), Gray et al.
patent: 2977466 (1961-03-01), Slater
patent: 3447087 (1969-05-01), Takezaki et al.
patent: 3559076 (1971-01-01), Worcester
patent: 3560858 (1971-02-01), Sakai et al.
patent: 3644853 (1972-02-01), Ma
patent: 3757228 (1973-09-01), Klank
patent: 3760193 (1973-09-01), Sakamoto
Bookbinder Marc E.
Griffin Robert L.
Steckler Henry I.
Trifari Frank R.
U.S. Philips Corporation
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