Patent ID: 6774609
Filing Date: 2004-08-10
Classification: H05B

Abstract:
An inverter circuit for charging a capacitive load, in which switching means is connected in series with inductance across DC-input terminals of the circuit to switch the switching means cyclically from an ON state to an OFF state for charging the capacitive load incrementally from fly-back in the inductance, and the inverter circuit includes feedback means coupled to the inductance for deriving a feedback voltage from the fly-back in the inductance, and further means operative in response to the feedback voltage for holding the switching means in the OFF state during fly-back of each cycle of operation, wherein the circuit also includes means for deriving a control voltage that is dependent on the voltage across the capacitive load, and circuit means for applying the derived control voltage to the further means for interrupting the cyclic operation of the circuit, the circuit means applying the control voltage to the further means to counteract response of the further means to the feedback voltage.