Workpiece process is: after turn on the light, ballast starter, lamp, lamp filament (jumper in series) in the series circuit, glow in the neon bulb light, heat, make the bimetallic strip to bend, neon bulb was short circuit; Power - ballast - loop current peak in the composition of the filament. Neon bulb was short circuit at the same time, the bimetallic strip cooling reset disconnect, made the current interruption. Due to the inductance of the electric potential and power supply after stack on both ends of tubes, high voltage gas breakdown in the tube light, light current surge on both ends of the tube, after the voltage drop. Then by series inductance to limit the current in the circuit, so the name "ballast".
The light tube is the effect of the ballast (limiting flow), which makes the lamp tube work properly. Gas discharge lamp has a higher starting voltage and low discharge voltage. When the lamp by high pressure after start-up, voltage drop, current increase, such as unrestricted, lamp current will continue to increase until the lamps may be burned, and so must be concatenated in the discharge lamp lighting circuit a ballast and lamp type, specification matching with the lamps start high start voltage, and limit the lamp current make the stability of a specified range
Ballast is a necessary accessory in the work of gas discharge lamp, its function: 1, produce high pressure, rise lamp tube
