| 摘要 |
The invention involves a control system for a fluorescent lamp, including a single ballast means connectable to said fluorescent lamp, said single ballast means being connectable either to an AC power supply of a first frequency or to a power supply of a second frequency. The fluorescent lamp is operated at substantially rated lumens condition when siad AC power supply of said first frequency is applied to said single ballast means, and when said power supply of said second frequency is connected to said single ballast means said fluorescent lamp is operated in a dimmed condition at less lumens than its rated condition. <IMAGE> |
