More on Fluorescent Ballasts
Fluorescent ballasts are essential for operating fluorescent tubes. They take the elecricity from the line and convert and regulate the flow into and through the tubes. You'll know when you need a new ballast when your bulbs won't light up, even when you replace old ones with brand new ones. Fluorescent tube ballasts are not generally interchangable, so make sure you match the one you're replacing with an exact compatible version.