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A novel single-stage constant-wattage high-power-factor electronic ballast

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5 Author(s)

A novel single-stage high-power-factor electronic ballast is presented in this paper. The ballast is obtained from the integration of a buck-boost converter and a half-bridge LC resonant inverter. The ballast features lamp power regulation against line voltage fluctuations together with high power factor and dimming capability. The steady-state analysis of the ballast is performed and a low-frequency model of the input stage is derived. A design example, including closed-loop circuitry, is also presented. Finally, some experimental results from a laboratory prototype are shown

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Industrial Electronics, IEEE Transactions on  (Volume:46 ,  Issue: 6 )