Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-11-18
1977-07-12
Miller, Jr., Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307246, 307247A, 307255, 307313, 361196, H03K 513, H03K 1756
Patent
active
040356698
ABSTRACT:
A switching circuit designed to start operation after the lapse of a predetermined delay time from its connection to a power source. The switching circuit has a switch element which is rendered conductive when the terminal voltage of a capacitor of a time constant circuit connected to the power source for determining the delay time has reached a predetermined value. Thereafter the electric charge of said capacitor is quickly discharged through a low impedance discharge line including said switch element. Thus, when the switching circuit has once been brought into operation after the lapse of a predetermined delay time from its connection to the power source, the capacitor of the time constant circuit is substantially completely discharged in such a manner that the terminal voltage of this capacitor is restored to substantially the same value as that before the connection to the power source, thereby allowing the switching circuit to provide the constant delay time even if its reconnection to the power source is made immediately after its disconnection therefrom.
REFERENCES:
patent: 3060331 (1962-10-01), Habisohn
patent: 3082329 (1963-03-01), Meyer et al.
patent: 3132261 (1964-05-01), Weber
patent: 3189751 (1965-06-01), Winchel
patent: 3210613 (1965-10-01), Prapis
patent: 3282631 (1966-11-01), Mosinski
Miller, Jr. Stanley D.
Nippon Gakki Seizo Kabushiki Kaisha
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