Back-up electrical systems

Details Back-up electrical systems Back-up electrical systems

1997-11-24

2000-08-22

Philogene, Haissa

Electric lamp and discharge devices: systems

Automatic substitution of the power supply

315 87, 315209R, 315219, 315225, H05B 3700

Patent

active

061077445

ABSTRACT:
A back-up power system which can accommodate a standard electrical device that is operable from an alternating current power source when alternating current is available, but is operable by a direct-current to direct-current converter when alternating current is unavailable, the converter being powered by replaceable low voltage battery charged by the alternating current source, with the loss of alternating current being sensed to cause the disconnection of the alternating current source and connection to the low-voltage replaceable battery.

REFERENCES:
patent: 4454452 (1984-06-01), Feldstein
patent: 4682078 (1987-07-01), Pascalide
patent: 5004953 (1991-04-01), McDonald
patent: 5416384 (1995-05-01), Bavaro
patent: 5426347 (1995-06-01), Nilssen

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