| 摘要 |
A device for operating a gas discharge lamp (13), with the device including an energy supply circuit which provides an alternating-current voltage (UL) or an alternating current (IL) having a predetermined period (TN) during operation at normal rating in order to feed the gas discharge lamp (13) with a predetermined electrical power. When the average lamp power is reduced with respect to operation at normal rating, an extension of the period (TR11+TR12, TR21+TR22) is provided. The amount of the extension of the period (TR11+TR12, TR22+TR22) is a function of the amount of the reduction in power. The device of the invention for operating the gas discharge lamp (13) extensively prevents an extinguishing of the light arc located in the gas discharge lamp (13) during the pole-reversal process, and therefore assures re-ignition following the pole-reversal process, even during operation with reduced power. A preferred use of the device of the invention is in a gas discharge lamp installed in a motor vehicle.
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