Energy conserving (stand-by mode) power saving design for battery chargers and power supplies with a control signal
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United States of America Patent
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Sep 7, 2021
Grant Date -
Mar 30, 2017
app pub date -
Dec 9, 2016
filing date -
Mar 7, 2008
priority date (Note) -
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Abstract
A system is described that turns off a high power, power supply when a device no longer needs high power. A low power, power supply or a rechargeable battery provides power to determine when the device again needs high power. The low power supply consumes a minimum possible power when the device does not need high power and the power rechargeable battery is not charged. That is, the high power and low power, power supplies are turned on or off based on the real time power consumption need of the device and the charged state of the battery. The power need of the device is monitored by a current shunt monitoring circuit and a control signal monitoring circuit.
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