ELECTRONIC DEVICE AND SWITCHING CIRCUIT CAPABLE OF SWITCHING BETWEEN POWER-SAVING MODE AND NORMAL MODE
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United States of America Patent
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Issued Date -
Jan 15, 2015
app pub date -
Aug 15, 2013
filing date -
Jul 10, 2013
priority date (Note) -
Abandoned
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Abstract
An electronic device includes a power-saving mode and a normal mode. When a mechanical button is in a first position, a main control chip outputs a logic high pulse to a switch connected to a voltage converter, such that the switch is turned on, and the voltage converter is disabled. The electronic device accordingly enters the power-saving mode because power from an external power source cannot be converted to a work voltage of the electronic device via the voltage converter. When the mechanical button is in a second position, the main control chip outputs a logic low pulse to the switch, such that the switch is turned on, and the voltage converter is enabled. The electronic device accordingly enters the normal mode because power from the external power source can be converted to the work voltage of the electronic device via the voltage converter.
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