Several functions of LED light ballast
Ballast? The r n brightness is obviously down.I hope my answer will help you.
It should be a rectifier, the device that converts AC (AC) to DC (DC), and leds are DC driven
Ballast is a necessary accessory in the work of gas discharge lamp, its function: 1, produce high pressure, rise lamp tube The light tube is the function of the ballast (limited flow), which makes the lamp tube work properly. Is fluorescent lamp ballast, ballast resistor) on the current limiting effect and the production of instantaneous high pressure equipment, it is enameled wire on the core of silicon steel production, the iron core coil, open/close the electricity in an instant, can produce high voltage, self inductance on the electrodes at the ends of the tube (filament). 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. 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, so 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. Ballast electronic ballast and inductance ballast.
