Abstract
In this paper a novel class E amplifier with two current sources used to implement high-power-factor electronic ballast for fluorescent lamps is presented and evaluated. The circuit is based on the class E amplifier with two current sources, one of them was implemented using the main input voltage and the other by means of a bulk capacitor charged from the resonant tank of the class E amplifier. This topology presents a high power factor and low current crest factor and only uses one switch with zero voltage switching. Design guidelines are presented and a 300-kHz electronic ballast for a 32-W compact fluorescent lamp was designed and tested.
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