Analysis and design of igniters for HID lamps fed with square waveforms

In this paper, the analysis and design of three igniters based on LC series network is presented. The proposed igniters have more elevation capacity and smaller size than a typical LC series resonant network, because LC series network include one transformer or one autotransformer respectively. The proposed igniters are adequate for HID lamp ignition and they are recommended for electronic ballasts that fed HID lamps with square waves, because extra semiconductor elements are not needed. The igniters were evaluated with an electronic ballast that feeds a 70 W HID halogen lamp with low frequency square waveforms and then acoustic resonances are eliminated. Experimental results of the igniters with selected electronic ballast are presented.