2006 Volume 126 Issue 3 Pages 368-369
A high-power-factor electrical ballast for HID lamp requires 6 switching devices. The cost ratio of switching devices and its driving circuits in electrical ballast is not small.
Therefore, this paper proposes a new switching method for a ballst which uses 4 switching devices. In experimental results, the proposed method obtains the power factor 0.990 with output power 400[W]. This paper verified that the proposed method has the fine driving performance on a high power HID lamp.
The transactions of the Institute of Electrical Engineers of Japan.C
The transactions of the Institute of Electrical Engineers of Japan.B
The transactions of the Institute of Electrical Engineers of Japan.A
The Journal of the Institute of Electrical Engineers of Japan