Front-end circuit of power converter
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United States of America Patent
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Jul 31, 2012
Grant Date -
Mar 3, 2011
app pub date -
Aug 26, 2009
filing date -
Aug 26, 2009
priority date (Note) -
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Abstract
A front-end circuit of a power converter has a power connection wiring detecting circuit, a power switch and a control unit. The power connection wiring detecting circuit is connected to an AC power. The control unit is connected to the power connection wiring detecting circuit. The power switch is connected to the power loop. The control unit turns on or off the AC power loop through the power switch. When the power connection wiring is correctly connected with the AC power, the control unit turns on the power switch and the front-end circuit outputs the AC power to the back-end circuit. When the power connection wiring is incorrectly connected with the AC power, the control unit turns off the power switch and the AC power is not outputted to the back-end circuit.
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