Control circuit operable to charge a battery at multiple charge rates
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United States of America Patent
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Sep 23, 2014
Grant Date -
Sep 8, 2011
app pub date -
Mar 8, 2010
filing date -
Mar 8, 2010
priority date (Note) -
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Abstract
A method of charging a battery at multiple charges rates includes determining a type of power source connected to a charging circuit and determining a voltage of a battery to be charged by the power source. A desired charging voltage is determined in response to the power source type and the battery voltage. A difference between the desired charging voltage and the battery voltage is determined. A digital potentiometer is selectively commanded to adjust the desired charging voltage to vary the difference and alter a charging rate of the battery, such that the difference is increased to increase the charging rate or is decreased to decrease the charging rate.
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