Soft switch power factor correcting circuit
A power factor correction, soft switching technology, applied in the output power conversion device, the conversion of DC power input to DC power output, electrical components and other directions, can solve the problems of low efficiency and large on-state loss of the whole machine Improved efficiency and reduced on-state loss
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[0018] The inventive circuit such as image 3 As shown, it includes a diode bridge rectifier circuit and a boost converter circuit, and the bridge rectifier circuit includes a first diode D1, a second diode D2, a third diode D3, a fourth diode D4 four rectifier diodes, the common cathode of the bridge rectifier circuit is connected to the drain of the main power switch M1, and its common anode is connected to the source of the main power switch M1, and the input AC power V in One end of the series branch composed of the filter inductance L is connected to the anode of the eighth diode Da between the first diode D1 and the third diode D3, and the other end is connected to the anode of the ninth diode Db. Between the second diode D2 and the fourth diode D4, the cathodes of the eighth diode Da and the ninth diode Db are connected to the output filter capacitor C o One end, the output filter capacitor C o The other end is connected to the common anode of the bridge rectifier cir...
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