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Method and device for triggering power supply switch of a cordless electric-apparatus

  • US 20040221183A1
  • Filed: 05/01/2003
  • Published: 11/04/2004
  • Est. Priority Date: 05/01/2003
  • Status: Active Grant
First Claim
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1. A method for triggering power supply module switch of a cordless electric-apparatus which includes a metal inductive area and an electrostatic inductive element comprising the following steps:

  • a. when user body approaches the device to a predetermine distance which is less than the electrostatic induction distance, said electrostatic inductive element detecting electrostatic charge from user body so as to turn a switch within the electrostatic inductive element on;

    b. according to the switch turned on, a power supply module supplying power for the cordless electric-apparatus;

    c. when user body leaving away from the cordless electric-apparatus exceed the electrostatic induction distance, the switch within the electrostatic inductive element being turned off; and

    d. according to the switch within the electrostatic inductive element turned off, the power supply module supplying a part power for the cordless electric-apparatus.

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