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Power supply device

  • US 7,558,088 B2
  • Filed: 04/04/2007
  • Issued: 07/07/2009
  • Est. Priority Date: 04/07/2006
  • Status: Expired due to Fees
First Claim
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1. A power supply device comprising:

  • an output voltage setting portion that generates an output voltage setting signal for providing a set value of an output voltage; and

    an output voltage control portion that controls to maintain a voltage value of said output voltage at said set value,wherein said output voltage setting portion comprises;

    a set value changeover portion that has a plurality of set value changeover switches and turns on/off said set value changeover switches to change the set value of said output voltage;

    a storage device that stores information indicating an ON/OFF state appropriate for each set value changeover switch for keeping the voltage value of said output voltage within a specified range; and

    a set value changeover switch control portion that controls said set value changeover switches so as to bring each set value changeover switch into a state as indicated by the information stored in said storage device when said output voltage is supplied to the load.

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