Patent ID: 8330396

Claim:
A starting circuit arrangement for starting a gas discharge lamp, particularly for starting a high-pressure gas discharge lamp, wherein the lamp, in order to provide an AC supply voltage, is assigned a supply circuit, which at least includes an inductor arranged in series with the gas discharge lamp, the starting circuit arrangement comprising: a trigger transformer which is connectible on the primary side to a starting triggering circuit and on the secondary side to the lamp, for transmitting a starting pulse; an input energy source for the starting triggering circuit; a first switch means in the starting triggering circuit; and an electronic control means driving the first switch means, wherein the starting circuit arrangement comprises on the supply side an input terminal connectible in the supply circuit of the lamp between the inductor and the lamp and that a means is provided for reproducing the phase profile of an AC supply variable of the lamp after starting of the lamp, especially for detecting a zero crossing of the AC supply variable of the lamp after starting the lamp.