| 摘要 |
PROBLEM TO BE SOLVED: To realize a high efficiency power converter by reducing loss being generated in a snubber circuit. SOLUTION: A snubber circuit comprising a capacitor C3 is connected between the anode of a diode D1 for rectifying the secondary voltage of an AC power supply, i.e., a transformer Tr, and the reverse series joint of the diode D1 and a current circulation diode D2. An active filter for reducing energy pulsation of a load through a diode D3 is connected between the output end and the joint of the C3 and the cathode of D1. A surge voltage being generated in the D1 is absorbed by the snubber circuit, energy stored in the snubber circuit is absorbed by the active filter, energy absorbed by the active filter is regenerated to the load.
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