Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1975-12-02
1977-08-09
Witkowski, Stanley J.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
58 23BA, 58 24R, 58 25, 307 66, 318138, 320 1, G04C 300, G04C 1304, H02M 700
Patent
active
040402479
ABSTRACT:
Apparatus for driving a timing device from an external AC power source and, in the event that the AC power source fails, from an auxiliary DC source. The driving apparatus includes a pulse producing circuit which produces periodic pulses in response to timing pulses. A timing pulse circuit, including an oscillator which produces an oscillating voltage having a frequency substantially proportional to the AC power source frequency, applies the timing pulses to the pulse producing circuit. A DC power supply receives the voltage which is supplied by the AC power source and generates a DC energizing voltage to energize the various circuits of the apparatus, including the pulse producing circuit and the oscillator. In the event that the AC power source fails, the voltage produced by the auxiliary DC source is used to energize the various circuits of the apparatus. A storage device is included in the DC power supply for receiving and storing the generated DC energizing voltage so as to maintain a sufficient energizing voltage during the interim between the failure of the AC power source and the time that the auxiliary DC source reaches a satisfactory energizing level. A driving circuit responds to the periodic pulses produced by the pulse producing circuit to supply driving energy to the timing device. The timing device comprises a single clock or clock system or, in the alternative, a master clock which is used to drive and control one or more slave clocks.
REFERENCES:
patent: 3479812 (1969-11-01), Kramer
patent: 3643420 (1972-02-01), Haydon
patent: 3644807 (1972-02-01), Zajac
patent: 3685278 (1972-08-01), Haydon
patent: 3690059 (1972-09-01), Haydon
patent: 3756010 (1973-09-01), Kimura et al.
patent: 3801795 (1974-04-01), Zajac et al.
patent: 3881951 (1975-05-01), McCoy
patent: 3889461 (1975-06-01), Marti et al.
patent: 3902311 (1975-09-01), Chacon et al.
patent: 3943697 (1976-03-01), Fujita
Robinson, Jr. Lee C.
Tri-tech, Inc.
Witkowski Stanley J.
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