Patent ID: 8035318
Filing Date: 2011-10-11
Classification: H05B,Y02B

Abstract:
1. Apparatus for powering a gas discharge load, comprising: a bridge rectifier, for generating a rectified voltage signal across a pair of output terminals in response to a received AC signal; a storage capacitor, coupled across the bridge rectifier output terminals, for storing energy provided by the rectified voltage signal; an inverter, coupled across the bridge rectifier, for generating an alternating voltage signal at an output terminal; an inductor, coupled between the inverter output terminal and a load terminal; a first resonant circuit including the inductor, for providing a DC feedback signal to the storage capacitor, the DC feedback signal being AC clamped to the received AC signal; and a second resonant circuit including the inductor, for supplying a load current to the load terminal; wherein the first resonant circuit adapts the DC feedback signal in response to changes in the received AC signal.