IEEJ Transactions on Industry Applications
Online ISSN : 1348-8163
Print ISSN : 0913-6339
ISSN-L : 0913-6339
Hot Restartable Electronic Ballast for HID Lamps Based on Immittance Conversion Theory
Toshihisa ShimizuHideki OhguchiRyo ShimotayaMichio ItoHiroyuki Takagi
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2003 Volume 123 Issue 3 Pages 294-300


Novel electric ballast for HID lamps which can not only supply the stable discharge current but also generate high voltage for initiate its restarting instantaneously is presented. On the restarting process of the HID lamps, the discharging starts at a glow-discharge and changes to stable arc-discharge. However, it is necessary to inject adequate voltage onto the HID lamp depending upon the previous discharging condition. The immittance-conversion elements, which are composed of a coaxial cables, are applied in order to realize above mentioned requirements. Furthermore, multi pulse injection method is presented for quick restarting of the HID lamps. The effectiveness of the proposed circuit is verified through the experimental results on the experimental setup for 75W HID lamp.

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© 2003 by the Institute of Electrical Engineers of Japan
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