Design and analysis of an electronic ballast with a secondary DC output

An electronic ballast circuit for a high‐frequency operated fluorescent lamp, which uses switched‐capacitor techniques, is presented in this paper. A part of energy in the electronic ballast is derived to a secondary DC output as a power supply. All the switching devices are zero‐current switching in the proposed circuit. The circuit is integrated with the function of a DC/DC converter. Therefore, the circuit has a dual functionality with simple control method. Simulation results and experimental results of the ballast with an FL‐15D lamp are used to verify the performance of the proposed circuit. Copyright © 2007 John Wiley & Sons, Ltd.

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