The traditional ballast starting, added high-pressure filament material suddenly without preheating, will take serious sputter and loss, and make the light turn black and scrap ahead of time.
传统的镇流器启动，未经预热突加高压灯丝材料会发生严重溅射损耗，导致灯管提前发黑报废。
2
The selection of macromolecular elastic material, model design and production, and the producing technics of ballast padding plate for urban rail are analyzed and evaluated.