| 摘要 |
<p>The invention relates to a circuit arrangement for igniting and operating a discharge lamp, provided with input terminals for connecting a supply source, and a ground terminal; differential-mode and common-mode filter means in which are incorporated inductive means and capacitive filter means; output terminals for connecting the discharge lamp; and a switch mode power supply connected to the input terminals and the output terminals by means of respective voltage conduction branches. According to the invention, the circuit arrangement is characterized in that the input terminals and output terminals are connected both to one another and to the ground terminal by means of respective capacitive filter means, in that a bead is included in one of the voltage conduction branches, and in that further common-mode capacitive means are present between the inductive means and the switch mode power supply. The requirements formulated in both EN55022 and EN55015 can be complied with in this manner.</p> |
