Safe electrode operation in universal electronic ballasts

This paper presents a design methodology of resonant circuits for magnetically-controlled electronic ballasts, focusing on their performance when driving a set of T5 tubular fluorescents lamps. Data collected from fluorescent lamp manufacturers and the Sum of Squares (SoS) technique are both used to set a design methodology suitable for the power range of the selected T5 lamps. Experimental results for a set of T5 fluorescent lamps are presented in order to validate this design.