Patent
1975-04-28
1977-03-08
Safourek, Benedict V.
325468, 325469, H04B 116
Patent
active
040115143
ABSTRACT:
A circuit for storing of tuning-in to preselected stations for receivers provided with electronic tuning, in which the voltage supplied from a charged capacitor onto variable reactance elements, such as capacitance diodes, included in tuned resonant circuits of the receiver, required to realize the tuning-in to preselected stations, is stored by means of electrochemical integrators. The storage is realized by recording the electric charge fed to the capacitor with constant capacitance to obtain thereon a voltage having a value required to tune-in the receiver to reception of the desired station. At reproducing of the tuning-in to the given station, the charging circuit of the capacitor supplying the tuning voltage becomes blocked on feeding to the capacitor the previously recorded quantity of the electric charge, which is signalled by instantaneous increase of the resistance of the electrochemical integrator. The control of the charging circuit becomes switched-over on the automatic tuning circuit by means of a signal from the detector.
REFERENCES:
patent: 3588706 (1971-06-01), Sakai
patent: 3789262 (1974-01-01), Backwinkel
patent: 3859610 (1975-01-01), Rhee
Masinick Michael A.
Safourek Benedict V.
UNITECH Przedsiebiorstwo Techniczno-Hand-Lowe
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