Fluorescent Light Ballast
Two effects are responsible for this.
Fluorescent light ballast. The ballast is used to create the voltage and current necessary to start and illuminate the fluorescent lamp. Ballast a device required by electric discharge light sources such as fluorescent or hid lamps to regulate voltage and current supplied to the lamp during start and throughout operation. The ballast provides enough voltage to start the fluorescent bulbs and once they are started it quickly lowers the current to produce just enough electricity to produce a steady light source. Remove the fluorescent ballast compartment cover to expose the internal wiring and ballast.
Ge 2 bulb commercial electronic fluorescent light ballast. In time the ballast may need to be replaced. Fluorescent light fixtures cannot be connected to dimmer switches intended for incandescent lamps. A familiar and widely used example is the inductive ballast used in fluorescent lamps to limit the current through the tube which would otherwise rise to a destructive level due to the negative differential resistance of the tube s voltage current characteristic.
Unplug the fixture or turn off the power at the main panel. Replace the ballast when your fluorescent light flickers or makes an annoying hum. An electrical ballast is a device placed in series with a load to limit the amount of current in an electrical circuit. All fluorescent light fixtures consist of at least lamp s lamp holders ballast and internal wiring.
The attachment method. Some older types have starters too.