| 摘要 |
<p>A system and method for powering discharge lamps including circuitry for controlling the filament preheating energy provided to one or more gas discharge lamps. The system, in some embodiments, provides a preheating circuit as a program-start mechanism to preheat the electrodes of a fluorescent lamp before the required voltage for striking an arc between the electrodes is applied. The preheating circuit is connected in series in the main resonant circuit and includes a preheat transformer, a switch, and DC capacitor. The preheating circuit provides preheating to filaments of the discharge lamps for a preset time before cutting of the preheating such that no further voltage is applied to the filaments thereby improving the efficiency of the system.</p> |
