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POWER SUPPLY ADAPTOR

  • US 20120262950A1
  • Filed: 11/25/2010
  • Published: 10/18/2012
  • Est. Priority Date: 11/25/2009
  • Status: Abandoned Application
First Claim
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1. A power supply adapter configured to receive an AC voltage, to convert the AC voltage thus received into a DC voltage, and to supply the DC voltage thus converted to an electronic device, the power supply adapter comprising:

  • a plug configured to receive the AC voltage in a state in which it is plugged into a receptacle;

    a rectifier circuit configured to rectify the AC voltage supplied via the plug;

    a smoothing capacitor configured to smooth the voltage rectified by the rectifier circuit;

    a DC/DC converter configured to receive the voltage smoothed by the smoothing capacitor, and to convert the voltage thus received into a DC voltage having a level to be supplied to the electronic device;

    a device-side connector configured to be connected to the DC/DC converter via a cable, to be detachably connected to the electronic device, and to supply the DC voltage to the electronic device in a state in which it is connected to the electronic device,wherein the device-side connector comprises a detection unit configured to detect whether or not the electronic device is connected to the device-side connector, and to generate a connection detection signal which indicates whether or not the electronic device is connected to the device-side connector,and wherein the DC/DC converter comprises a control circuit configured to be connected to the detection unit of the device-side connector via the cable, to be set to an operating state when the connection detection signal indicates that the electronic device is connected, and to be set to a non-operating state when the connection detection signal indicates that the electronic device is not connected.

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