Power saving uninterruptible power supply

Details Power saving uninterruptible power supply Power saving uninterruptible power supply

2011-03-22

2011-03-22

Fleming, Fritz M (Department: 2836)

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

C307S064000

Reexamination Certificate

active

07911085

ABSTRACT:
The power saving uninterruptible power supply (UPS) has a first and second switches, an energy spared switch, a transformer, an automatic voltage regulator (AVR), a charger-and-inverter, a normal mode determination unit and an electric switch. When the utility power is stable, the first and second switches are connected together to supply the utility power to a load. At the time, the energy spared switch is physically disconnected with the utility power and the transformer and the AVR. Therefore, the transformer and AVR do not consume more energy of the utility power and the transforming efficiency of the UPS is increased.

REFERENCES:
patent: 5229650 (1993-07-01), Kita et al.
patent: 2004/0036361 (2004-02-01), Dai et al.
patent: 2010/0237701 (2010-09-01), Yeh et al.

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