Simulation of electronic ballast for fluorescent lamp with dimming capability

Simulation of a high frequency electronic ballast which operates a fluorescent lamp at high frequency is proposed. Simulation is carried out using Pspice program to illustrate the performance of the circuit. A series inductor at the supply side is utilized to reduce the harmonic contents at the supply side. Dimming capability of the fluorescent lamp is achieved by controlling the switching of the used transistor. Simulation shows the effects of utilizing the series inductor at the supply side and the controlling of the transistor used on the circuit performance. Simulation illustrates the performance of the lamp at starting. Experimental results from a laboratory prototype are used to verify the simulation procedure