Energy Efficient Power Supply
OwnerTim Cassidyinventor
Life of this patent
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Abstract
There is disclosed a power supply, a system, and method. A power supply may include a power converter for converting AC primary power into DC power, an internal load, and a DC power plug for delivering DC power from the power supply to a load external to the power supply. The power converter may include a standby circuit to place the power converter into a low power quiescent operating mode. A switch may be integrated into the DC power plug, the switch having an operate state and a standby state. The switch may control the flow of power from the power converter to the internal load.
Claims19
A power supply comprising:
- a power converter for converting AC power into DC power, the power converter including a standby circuit to place the power converter into a quiescent operating mode
- a DC power plug for delivering DC power from the power supply to a load external to the power supply
- an internal load
- a switch integrated into the DC power plug, the switch having an operate state and a standby state
- wherein the switch controls the flow of power from the power converter to the internal load.
A battery charger comprising:
- a power converter for converting AC power into DC power, the power converter including a standby circuit to place the power converter into a low power quiescent operating mode
- a DC power plug for delivering a battery charging current from the power supply to an electronic device containing a rechargeable battery
- a battery charge controller to control the charging current
- a switch integrated into the DC power plug, the switch having a standby state and an operate state
- wherein the switch controls the flow of power from the power converter to the battery charge controller.
A method of operating a power supply, comprising:
- determining the state of a switch, wherein
- the switch is integrated into a power plug for delivering electrical power from the power supply to a load external to the power supply
- the switch has an operate state indicating that the power plug is engaged with the external load
- the switch has a standby state indicating that the power plug is not engaged with the external load
- substantially reducing power flow to an internal load within the power supply in response to a determination that the switch is in the standby state.
A system comprising:
- a portable electronic device including
- a rechargeable battery
- a receptacle for receiving DC electrical power
- a power supply comprising
- a power converter for converting AC power into DC power, the power converter including a standby circuit to place the power converter into a low power quiescent operating mode
- a DC power plug for delivering a charging current from the power supply to the receptacle
- a battery charge controller to control the charging current
- a switch integrated into the DC power plug, the switch having a standby state and an operate state
- wherein the switch controls the flow of power from the power converter to the battery charge controller.
Dependencies are inferred from the claim text.