| 摘要 |
<p>The invention relates to a circuit arrangement for operating a discharge lamp (LA) with a high frequency current comprising power feedback means and electrode preheating means. The circuit arrangement comprises an antiboost switch for disabling the power feedback means before the lamp has ignited and enabling the power feedback means after the lamp has ignited. In accordance with the invention the antiboost switch is also used to enable the electrode preheating means before the lamp has ignited and to disable the electrode preheating means after the lamp has ignited.</p> |
