The effect of the ballast on the lamp tube
It is the driver of the tubes, just as you screw with a screwdriver, since in the process of screw mechanical energy comes from the hand, why not directly with the hand twist? Because the screw doesn't fit with the hand, ballast, mains cannot directly drives the fluorescent tube, wants to use mains light bulb draws on ballast the device.
So you have two jobs in the ballast and the first one is the one that creates a high voltage through the gas in the tube and lights up the light bulb The second limit current We know the ballast is actually called inductance Can hinder the alternating current (ac) To prevent the current is too large To prevent light overload Because the gas inside the bulb is not linear resistance need to limit current Did you see the whole hand
When lamp normal luminescence, smaller resistance, always keep open state, the starter of the electric current is stable through work lamp, ballast, lamp to normal light. Due to the ballast in fluorescent lamp work, there is always an electric current passes through, prone to vibration, and fever, so have a ballast of fluorescent lamp, especially the ballast quality is bad, will produce very big voice, use a long time, also easy to burn out.
This movement is alternating, when the regenerator (bubble) closes, the filament of the lamp passes through the ballast. When open the starter and ballast can produce high feeling on the ends of the tube filament, filament electron bombardment wall of fluorescent powder, repeated several times to break the starter, such movement will be repeated several times, to get through tubes.
I am explains: fluorescent lamp on the rev limit flow and instantaneous high pressure equipment should call ballast, he is at the core of silicon steel ingot enameled wire, such iron core coil, power outages, in an instant can produce high voltage, self inductance on the electrodes at the ends of the tube (filament).
