Patent ID: 7778047
Filing Date: 2010-08-17
Classification: H02M

Abstract:
1. An inverter apparatus which is incorporated in a power supply apparatus having primary and secondary regions which need to be electrically insulated from each other, converts an input voltage to an AC driving voltage and supplies the AC driving voltage to a load, the inverter apparatus comprising: a transformer of which secondary winding is connected to the load; a switching circuit which includes a plurality of transistors connected to a primary winding of the transformer to alternately apply the input voltage and a fixed voltage lower than the input voltage to the primary winding of the transformer; a pulse transformer of which secondary winding being connected to control terminals of a plurality of the transistors; a feedback line through which a feedback signal indicating an electrical condition of the load is fed back; and a control circuit which receives the feedback signal fed through the feedback line and supplies a switching voltage to a primary winding of the pulse transformer based on the feedback signal, wherein the primary winding of the transformer, the switching circuit, and the secondary winding of the pulse transformer are disposed on the primary region, and the secondary winding of the transformer, the primary winding of the pulse transformer, the feedback line, and the control circuit are disposed on the secondary region.