Electronic ballast for instantaneously re-lighting metal-hallide lamp

摘要

The subject innovation is AC input (10), DC-DC converter 20, the flyback converter 30, inverter 40, in an electronic ballast for a metal halide lamp which is made up of the igniter 50, the igniter (50 ) is applied to the voltage outputted from the high voltage generating transformer (T4), and the flyback converter 30 which generates the secondary winding voltage of the high-voltage from a relatively primary winding voltage little by accepted momentarily to a primary winding of the T4 as a by flowing generates counter-electromotive force for a metal halide discharge current instantaneous reignition lamp electronic ballast of the lamp is configured to include a spark gap (spark gap) to which generates a high voltage in the secondary winding of the T4.