| 摘要 |
<p>The invention relates to a circuit arrangement for supplying a discharge lamp, comprising a converter for generating a high-frequency current with a frequency f from a supply voltage, which converter comprises at least one switching element which is rendered alternately conducting and non-conducting with the frequency f while the discharge lamp is being supplied. According to the invention, the circuit arrangement is in addition provided with a circuit portion (I) for the low-frequency modulation of the power consumed by the discharge lamp through an adjustment of the conduction period of the switching element. It is achieved thereby that instabilities in the discharge lamp plasma, such as striations and moding, are suppressed to a considerable degree.</p> |
