| 摘要 |
PROBLEM TO BE SOLVED: To securely light two fluorescent lamps and to retain the lighting of one of them even if the other one is broken. SOLUTION: One end of a secondary winding 12 of a leakage-type driving transformer 11 is connected to one end on the same side of a differential winding choke coil 43, and the other ends of the two coils of the choke coil 43 each are connected to each one end of fluorescent lamps 13, 14. Additionally, the respective other ends of the fluorescent lamps 13, 14 are connected to the other ends of the secondary winding 12. |
