Patent ID: 7808803
Filing Date: 2010-10-05
Classification: H02M

Abstract:
1. An inverter circuit comprising: a direct current input terminal configured to be connected to a direct current power supply; a transformer comprising a first primary winding, a second primary winding, and a secondary winding for outputting an alternating current voltage; a pulse generator comprising a first output terminal and a second output terminal; a first switch transistor comprising a source electrode connected to ground, a gate electrode connected to the first output terminal of the pulse generator, and a drain electrode; a second switch transistor comprising a source electrode connected to ground, a gate electrode connected to the second output terminal of the pulse generator, and a drain electrode; and a resistor; wherein the first primary winding and the second primary winding share a tap, the tap is connected to the direct current input terminal via the resistor, the drain electrode of the first switch transistor is connected to the tap via the first primary winding, and the drain electrode of the second switch transistor is connected to the tap via the second primary winding, the resistance of the resistor being far greater than the resistance between the source electrode and the drain electrode of the first switch transistor, and far greater than the resistance between the source electrode and the drain electrode of the second switch transistor.