发明名称 Memory circuit for tuning of an electronically tuned receiver to a preselected station
摘要 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.
申请公布号 US4011514(A) 申请公布日期 1977.03.08
申请号 US19750572443 申请日期 1975.04.28
申请人 UNITECH PRZEDSIEBIORSTWO TECHNICZNO-HAND-LOWE 发明人 WROBLEWSKI, JERZY
分类号 H03J7/18;H03J5/02;H03J7/20;H03J7/26;(IPC1-7):H04B1/16 主分类号 H03J7/18
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