Power controller for circuits with battery backup

Details Power controller for circuits with battery backup Power controller for circuits with battery backup

1987-03-11

1988-03-08

Shoop, Jr., William M.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 64, 307 87, 365229, H02J 902

Patent

active

047301210

ABSTRACT:
A power controller for selectively coupling the voltage from a primary power source to a power output terminal or coupling the voltage from a battery backup input terminal to the power output terminal includes circuitry for receiving a reset or isolation signal. After receipt of the isolation signal when the primary power source is above a first threshold voltage, the primary power source and the backup battery source will be isolated from the output power terminal on the next occurrence of the removal of the voltage from the primary power source.

REFERENCES:
patent: 3757131 (1973-09-01), Krutz et al.
patent: 3859638 (1975-01-01), Hume
patent: 3980935 (1976-09-01), Worst
patent: 4122359 (1978-10-01), Breikss
patent: 4288865 (1981-09-01), Graham
patent: 4337524 (1982-06-01), Parkinson
patent: 4388706 (1983-06-01), Butler
patent: 4441031 (1984-04-01), Moriya et al.
patent: 4510401 (1985-04-01), Legoult
patent: 4638175 (1987-01-01), Bradford et al.
patent: 4645943 (1987-02-01), Smith, Jr. et al.

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