| 摘要 |
<p>The ballast has input terminals (A1, A2) receiving a DC voltage from a supply source of a vehicle. A chopping supply circuit functions at a preset chopping frequency to supply an output voltage to a lamp. A filtering device is placed at an input to the ballast, and includes a filtering capacitor in series with an additional choke (17) to form a resonant circuit situated between the terminals and tuned to the frequency. An independent claim is also included for a vehicle comprising ballast.</p> |
