Method and device for triggering power supply switch of a cordless electric-apparatus
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United States of America Patent
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Mar 7, 2006
Grant Date -
Nov 4, 2004
app pub date -
May 1, 2003
filing date -
May 1, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for triggering a power supply module switch of a cordless electric-apparatus which includes a metal inductive area and an electrostatic inductive element comprising the following steps: when a user body approaches the device to a predetermined distance which is less than the electrostatic induction distance, the electrostatic inductive element detects electrostatic charge from the user body so as to turn a switch within the electrostatic inductive element on; a power supply module supplies power for the cordless electric-apparatus when the switch is turned on; when the user body leaving away from the cordless electric-apparatus exceeds the electrostatic induction distance, the switch within the electrostatic inductive element turns off and when the switch turns off the power supply module supplies a part power for the cordless electric-apparatus.
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