| 摘要 |
A power supply unit includes input terminals to which alternating current power is supplied, a rectifier circuit configured to rectify the alternating current power supplied from the input terminals, a capacitor configured to smooth the alternating current power rectified by the rectifier circuit, a primary transformer winding and a switching element connected in series between first and second terminals of the capacitor, a secondary transformer winding coupled to the primary transformer winding, output terminals connected to the secondary transformer winding, and a snubber circuit connected parallel to the switching element. The snubber circuit includes a parallel circuit having a first capacitor and a second capacitor connected in parallel, and a resistor connected in series with the parallel circuit.
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