HF Multiresonant Electronic Ballast for Fluorescent Lamps With Constant Filament Preheat Voltage

A novel HF multiresonant ballast for fluorescent lamps is analyzed, simulated, and tested experimentally. The ballast includes two major resonant networks. The lamp is driven by a parallel resonance arrangement that acts as a current source. During warm-up the filaments are driven by a secondary winding of a series-resonant inductor. The series resonance… CONTINUE READING