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Design Considerations for the Optimization of Magnetically Dimmed Electronic Ballasts

Perdigão, M. ; Saraiva, E. S. ; Costa, Marco A. Dalla Costa

Design Considerations for the Optimization of Magnetically Dimmed Electronic Ballasts , Proc Jornadas Hispano Lusas de Ingenieria Eléctrica, Funchal, Portugal, Vol. CD, pp. CD - CD, July, 2007.

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Abstract
Previous presented works showed that magnetically-controlled electronic ballasts with LC resonant tank configuration can present an instability region, therefore limiting the dimming range. This can also be observed in other resonant tank configurations. This paper presents a design method for the magnetic regulator in order to prevent these instabilities. Moreover, a systematic method to characterize the magnetic regulator is introduced. Experimental results for TLD 36W fluorescent lamp are presented.