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Design and analysis of a new single-switch soft-switching class-E electronic ballast with high input power factor is presented. Design equations for the optimum operating condition are derived and complete computer analysis performed. It is shown that low duty-cycle control of the class-E ballast can reduce the voltage stress of the controlled switch. A 40-W fluorescent lamp ballast is implemented and experimental recordings verify the analytical results.
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Lin et al. (1998) studied this question.
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