PORTABLE ELECTRONIC DEVICE USING A PLURALITY OF POWER SOURCES
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United States of America Patent
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Issued Date -
Feb 28, 2008
app pub date -
Aug 28, 2006
filing date -
Aug 28, 2006
priority date (Note) -
Abandoned
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Abstract
A portable electronic device that can use a dc power and a renewable energy as power supplies. The portable electronic device includes a rechargeable battery as a spare power when the ac power is not available, a power management unit, and a plurality of loads. The power management unit selectively respectively couples the plurality of loads to the power supplies according to a status of each of the power supplies, the amount of power each load requires, and design considerations.
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