Power saving uninterruptible power supply
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United States of America Patent
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Mar 22, 2011
Grant Date -
Nov 26, 2009
app pub date -
Jul 27, 2009
filing date -
Jan 15, 2008
priority date (Note) -
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status (Latency Note)
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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.
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