Patent ID: 7723927

Claim:
An inverter circuit comprising: a full-bridge circuit configured for converting an external direct current (DC) voltage into an alternating current (AC) low voltage; a plurality of main inverse transformers configured for converting the AC low voltage into an AC high voltage; and a feedback circuit comprising: a secondary inverse transformer configured for converting the AC low voltage outputted by the full-bridge circuit into an AC high voltage; a sampling unit configured for sampling the AC high voltage outputted by the secondary inverse transformer and outputting a sampling voltage; and an integral circuit unit configured for integrating the sampling voltage and outputting an integrated sampling voltage to the full-bridge circuit; wherein when the AC low voltage outputted by the full-bridge circuit fluctuates, the feedback circuit sends a feedback voltage to the full-bridge circuit, and the full-bridge circuit stabilizes the AC low voltage according to the feedback voltage, the feedback voltage being in direct proportion to the fluctuation of the AC low voltage.