Vehicle electrical power back-up circuit and method
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United States of America Patent
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-
Jan 23, 2001
Grant Date -
N/A
app pub date -
Dec 17, 1997
filing date -
Dec 17, 1997
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A vehicle electrical back-up circuit and method. Vehicle electrical devices normally receive the power required for their operation from a vehicle electrical system at a first voltage. An auxiliary storage battery is provided at a second, lower voltage. Preferably, charge is maintained in the battery by a charging circuit powered by the vehicle electrical system. A voltage booster circuit boosts the second voltage of the auxiliary storage battery back to the first voltage, providing auxiliary electrical power available for operating the electrical devices.
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