Patent ID: 9647535
Date: 2017-05-09
CPC Classifications: H01F,H02M

Claim:
1. A power-supply apparatus comprising: a transformer equipped with a primary coil and a secondary coil; a primary semiconductor unit in which semiconductor devices are installed, the primary semiconductor unit being joined to the primary coil of the transformer; a secondary semiconductor unit in which semiconductor devices are installed, the secondary semiconductor unit being joined to the secondary coil of the transformer; a secondary electronic device which makes up a secondary circuit along with the secondary semiconductor unit; a plurality of connecting conductors which electrically connect among the transformer, the primary semiconductor unit, the secondary semiconductor unit, and the secondary electronic device; a first stack made up of one of the transformer and the secondary electronic device and made up of the primary semiconductor unit; and a second stack made up of the other of the transformer and the secondary electronic device and made up of the secondary semiconductor unit; wherein the first stack and the second stack are configured to shield electromagnetic noise emitted from at least one of the primary semiconductor unit or the secondary semiconductor unit.