Weird Fluorescent Preheat Tests v1: 2 F20T12 Lamps On F40T12 Ballast
This time I've got a weird but cool little trick that can be done with a 4-foot, F40T12 pre-heat ballast. Placing 2 2-foot (F20T12) lamps in ...
Robertson S40B preheat ballast installed in fixture
In my previous video of this ballast, I had it laying on the floor with pieces of wire running everywhere. Decided that this ballast needed a home ...
Home Repair & Maintenance Tips : How to Change a Ballast in a Fluorescent Light
Change a ballast in a fluorescent light using an electrical tester to check for safety, and by twisting it 30 degrees to loosen the light fixture ...
Incandescent Ballast
Experimental wiring of a standard incandescent light bulb connected in series with a small F15T12 15 watts fluorescent lamp to act as a ballast ...