Telecommunications – Receiver or analog modulated signal frequency converter – With particular receiver circuit
Patent
1981-03-04
1982-10-19
Bookbinder, Marc E.
Telecommunications
Receiver or analog modulated signal frequency converter
With particular receiver circuit
307 30, 307296R, 330140, 455150, 455298, 455310, H04B 116
Patent
active
043554229
ABSTRACT:
In a varactor diode tunable receiver supplied with operating current from batteries, the invention proposes to insert a blocking diode between the supply terminal of the playback amplifier and the input of the stabilizing circuit producing a stabilized tuning supply voltage for the varactor diodes, and to arrange a storage capacitor of suitable capacity in parallel with the input of the stabilizing circuit. This measure prevents the receiver from becoming detuned during voltage changes on the battery caused by the high modulation peaks of the playback amplifier. The battery can be used until the intended point of complete discharge is reached, without any considerable detunings of the receiver having to be feared.
REFERENCES:
patent: 2179260 (1939-11-01), Jones
patent: 2812393 (1957-11-01), Patrick
patent: 3059109 (1962-10-01), Silberbach
patent: 3065424 (1962-11-01), Whisenhunt
patent: 3181066 (1965-04-01), Ebbinge et al.
Bookbinder Marc E.
International Standard Electric Corporation
O'Halloran John T.
LandOfFree
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