Self protecting pre-charge circuit
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United States of America Patent
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Jul 1, 2014
Grant Date -
N/A
app pub date -
Aug 29, 2011
filing date -
Aug 30, 2010
priority date (Note) -
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Abstract
A battery charging system includes a pre-charge control circuit for electrically coupling a plurality of power supply terminals to a plurality of load terminals. The pre-charge control circuit includes a plurality of switching elements for selectively coupling at least one of the plurality of power supply terminals and one of the plurality of power supply using one of a pre-charge current path and a standard charge current path. The pre-charge current path includes at least one pre-charge resistor in series with a positive temperature coefficient (PTC) resistor.
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