Power monitor for use in starting and stopping a digital electro

Details Power monitor for use in starting and stopping a digital electro Power monitor for use in starting and stopping a digital electro

1978-04-03

1980-06-17

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307247A, H03K 1716, H03K 1722, H03K 1728

Patent

active

042085942

ABSTRACT:
A power monitor for providing a low impedance path to ground for a digital electronic system under certain circumstances dependent upon the status of the A.C. energization has a normally closed semiconductor switch coupled between the digital electronics system and ground. A bias voltage derived from the regulated D.C. power supply is delayed and applied to the switch to open it a predetermined interval after the A.C. is turned on. The bias is removed from the switch when the A.C. power is turned off prior to the time the regulated D.C. outputs deviate substantially from their nominal values.

REFERENCES:
patent: 3544720 (1970-12-01), Corderman
patent: 3555306 (1971-01-01), Cogar et al.
patent: 3909674 (1975-09-01), Spence et al.
patent: 3925682 (1975-12-01), Hamada

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