| 摘要 |
<p>The invention relates to an arrangement for starting and supplying a discharge lamp (14). This discharge lamp (14) is equipped with preheatable electrodes (15, 16). An electric coil (13) is arranged in series with the lamp, and a capacitor (17) is arranged in parallel with the lamp. &lt;??&gt;In accordance with the invention a voltage of a high frequency is first applied between the ends (A, B) of the series arrangement formed by the coil (13) and the lamp (14) whereafter approximately 1 second later said frequency is reduced until a series resonant condition is obtained and thereafter still further reduced to the operating frequency of the lamp. This achieves that the lamp (14) is started in a simple way whereby the electrodes have been preheated to a sufficient extent. </p> |
