Analysis of effects of inductance component in electrodeless lamp on ballast performances

Ballasts for electrodeless lamp have resonant circuit as an interface means between ballast and lamp like ballasts for fluorescent lamp. Most popular resonant filter circuit is LCC and LC-C type. Their characteristics and transfer functions with electrodeless lamp are not known well although resonant filter has an important role in both start-up and steady state. In this paper, various kinds of transfer functions for electrodeless lamp including inductance component of coupling core are given and their characteristics are analyzed with the variations of coupling inductance value.