Patent ID: 9690311
Date: 2017-06-27
CPC Classifications: G05B,G05F,H02M

Claim:
1. A power supply apparatus, comprising: a power conversion circuit; a single transformer having a primary winding, a first secondary winding, and a second secondary winding, wherein the primary winding is coupled to the power conversion circuit, and the first and second secondary windings respectively induce a corresponding voltage based on a voltage of the primary winding; a conjugate energy-storing inductor having a first conjugate coil and a second conjugate coil isolated from each other, wherein the first conjugate coil is coupled to the first secondary winding, and the second conjugate coil is coupled to the second secondary winding; and a first rectifying and filtering circuit and a second rectifying and filtering circuit respectively coupled to the first and the second conjugate coils, wherein the first and the second conjugate coils respectively charges and discharges in response to the voltage induced by the first and the second secondary windings, and thereby respectively provides a first output voltage and a second output voltage via the output terminals of the first and the second rectifying and filtering circuits, wherein the first secondary winding and the first rectifying and filtering circuit use a voltage level of a first reference terminal as a first reference voltage level, and the second secondary winding and the second rectifying and filtering circuit use a voltage level of a second reference terminal as a second reference voltage level.