What is a ballast? What is the price of a fluorescent lamp ballast?
Modern increasingly use electronic ballast fluorescent lamp, portable small, even can integrate electronic ballast and tube together, at the same time, the electronic ballast can usually combine functions, the starter and starter can save separate again. Electronic ballasts can also have more functions, such as by improving the current frequency or current waveform (e.g., into a square wave) to improve or eliminate fluorescent lamp flickering phenomenon; It can also be used to make fluorescent lamps use dc power. Some of the shortcomings of the traditional inductive rectifier have been replaced by an increasingly sophisticated electronic ballast.
Inductance ballast because of its simple structure, long service life, coordination as the first kind of fluorescent lamp ballasts, its market share is still relatively large, however, because of its low power factor, low voltage startup performance is poor, heavy energy consumption, stroboscopic, and many other shortcomings, its market is slowly being replaced by electronic ballast, the inductance ballast energy loss: 40 w (lamp power) + 10 w heat loss itself (ballast) is equal to the total power consumption of lamps and lanterns of a complete set of 50 w.
Inductance ballast because of its simple structure, long service life, coordination as the first kind of fluorescent lamp ballasts, its market share is still relatively large, however, because of its low power factor, low voltage startup performance is poor, heavy energy consumption, stroboscopic, and many other shortcomings, its market is slowly being replaced by electronic ballast, the inductance ballast energy loss: 40 w (lamp power) + 10 w heat loss itself (ballast) is equal to the total power consumption of lamps and lanterns of a complete set of 50 w.
Working principle of electronic ballast, electronic ballast is a transform power frequency ac power into high frequency ac power converter, its basic working principle is: the power frequency power through radio frequency interference (RFI) filter, full-wave rectifier and passive or active power factor corrector (PPFC or APFC), a dc power supply. Through the DC/AC converter, the output of 20 k - 100 KHZ high frequency AC power, added to the LC series resonance circuit, which is connected with lamp heating filament, at the same time produce resonance voltage on the capacitor, add on both ends of tubes, but make discharge lamp "" into" conduction "state, to enter a state of luminescence, high frequency inductive limit the increase of current role at this time, guarantee the normal work of the tubes for the lamp voltage and lamp current, often add various protection circuit, such as abnormal protection and surge voltage and current protection, temperature protection and so on. The electronic ballast of general fluorescent lamp is 8 to 10 yuan, with abnormal protection function 15-20 yuan, not expensive. What is the price of the ballast? Is the fluorescent lamp in your house broken and you want to change a ballast? This is best to seek professional electrician to deal with, oneself is not a professional person not to get. The one that needs to climb higher is dangerous!
Said the ballast of the fluorescent lamp in now are very few people use in decorating, most people is to use energy-efficient light bulbs, can save more electricity, so the green ignore by consumers. Electronic ballast (electricaling), a type of ballast, refers to electronic devices that use electronic technology to drive electric light sources to produce the needed lighting. Corresponding to this is the inductor type ballast (or ballast).
