| 摘要 |
<p>The invention relates to a device and method for starting a fluorescent lamp (1) connected to an AC voltage supply (22, 23). The device comprises a current limiter (9) connected to the AC voltage supply and serially to a first filament (2) of the lamp, a voltage rectifier (36) for rectifying the AC voltage signal and for outputting the rectified voltage signal to the second filament (3) of the fluorescent lamp, switching means (30, 18, 19) controlled by timing means (34, 25, 27) for periodically cutting of said rectified signal from the second filament, and timing means for controlling the activation of said switching means. The method comprises providing to the electrodes of the lamp pulses of high voltage followed by current injections at least one time during each half-cycle of the AC electric network. Preferably, the rate of the current injection increases as the starting period progresses and several high voltage pulses are provided to the lamp during each half-cycle, and the number of pulses during each half-cycle reduces as the starting period progresses.</p> |
