Uninterruptible power supply apparatus

Details Uninterruptible power supply apparatus Uninterruptible power supply apparatus

1999-01-11

2000-08-15

Ballato, Josie

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307 43, 307 64, H02J 700

Patent

active

061041041

ABSTRACT:
An uninterruptible power supply apparatus includes a storage battery for providing a DC voltage, a switch for switching from an AC power source for providing an AC voltage to the storage battery, and an AC-stabilizing circuit connected to an output side of the switch. The AC-stabilizing circuit performs an AC/AC conversion or a DC/AC conversion in response to a switching operation of the switch in order to output an AC voltage therefrom. Namely, for a commercial power supply, the AC-stabilizing circuit supplies a stable AC voltage despite variations in power supply voltage. The size of the apparatus is reduced, and its service life is prolonged.

REFERENCES:
patent: 5229650 (1993-07-01), Kita et al.

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