Patent ID: 9490703
Filing Date: 2016-11-08
CPC Classification: H02M,Y02B

Claim Text:
1. A power supply device that includes: a substrate that includes at least a semiconductor element; a transformer; a rectifying section that performs rectification; and a filtering section that reduces alternating-current components, the power supply device comprising: a first capacitor section that is connected in parallel to a rectifying element included in the rectifying section; and a second capacitor section that is connected between one end and the other end of the transformer, generates one or more harmonic waves that reduce a peak value of a fundamental wave of resonance generated based on a leakage inductance component of the transformer and a capacitance component of the first capacitor section, wherein the second capacitor section comprises a plurality of capacitors, the plurality of capacitors are connected with each other using a serial connection, a parallel connection, or a combination of a serial connection and a parallel connection, and the second capacitor section includes an interconnected portion that interconnects the plurality of capacitors, the interconnected portion having an area greater than an area of one end side of the second capacitor section or an area of the other end side of the second capacitor section.