| 摘要 |
<P>PROBLEM TO BE SOLVED: To reduce the size and the cost of an input filter in a high power factor switching power supply (PFC), and to reduce a loss of the power supply caused by a semiconductor. <P>SOLUTION: The switching power supply achieves high efficiency by employing a two-transistor critical mode PFC interleave system in place of a single transistor critical mode PFC interleave system thereby reducing a loss of a VF by a diode bridge. <P>COPYRIGHT: (C)2008,JPO&INPIT |
