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POWER SUPPLY CIRCUIT AND POWER SUPPLY SYSTEM

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专利内容由知识产权出版社提供

专利名称:POWER SUPPLY CIRCUIT AND POWER

SUPPLY SYSTEM

发明人:KUNG-WEI CHANG,SHENG-LIANG WANG申请号:US152250申请日:20161010

公开号:US20180081422A1公开日:20180322

专利附图:

摘要:A power supply system for a motherboard includes a switching power source, acontrol circuit, and a switch circuit. The control circuit includes a photocoupler and acomparator. The photocoupler is electrically connected to the switching power source

and the comparator. The switch circuit is electrically connected to the comparator and amotherboard. The switch circuit is turned off when the motherboard is in a normal stateand turned on when the motherboard is in a standby state. The switching power sourceoutputs a voltage through the control circuit when the switch circuit is turned off. Whenthe switch circuit is turned on, the comparator outputs a first state signal to thephotocoupler. The photocoupler thus outputs a first driving signal to the switchingpower source. The first driving signal causes the switching power source to reduce thevoltage.

申请人:HONG FU JIN PRECISION INDUSTRY (WuHan) CO., LTD.,HON HAI PRECISIONINDUSTRY CO., LTD.

地址:Wuhan CN,New Taipei TW

国籍:CN,TW

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