Patent ID: 9423758
Filing Date: 2016-08-23
CPC Classification: G03G,H02M

Claim Text:
1. A power supply apparatus constructed to output a voltage obtained by superposing an alternate current voltage with a direct current voltage, comprising: one transformer whose primary side and secondary side are insulated; a first driving unit connected to the primary side of the transformer and constructed to drive the primary side of the transformer so as to output the alternate current voltage from the secondary side of the transformer; a direct current voltage generation unit having a plurality of a capacitor and a diode and is connected to the secondary side of the transformer and constructed to amplify a voltage output from the secondary side of the transformer and to output the amplified voltage as a direct current voltage; a voltage detection unit connected to the direct current voltage generation unit and constructed to detect the direct current voltage output from the direct current voltage generation unit; and a second driving unit connected to the detection unit and the direct current voltage generation unit and constructed to control the direct current voltage output from the direct current voltage generation unit according to a detection result of the voltage detection unit and a target voltage.