ENERGY CONSERVING (STAND-BY MODE) POWER SAVING DESIGN FOR BATTERY CHARGERS AND POWER SUPPLIES WITH A CONTROL SIGNAL

摘要

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.

主权项

1. A method, comprising:
monitoring a consumption of power associated with an electronic device during a high-power mode of operation of the electronic device, wherein an alternating current (AC) power source is connected to a high-power supply during the high-power mode of operation; identifying a change in the power consumed by the electronic device; and in response to said identifying a change in power, disconnecting the AC power source from the high-power supply.