The electronic ballast is used electronic technology to drive electric light source, which is one requirement of lighting electrical equipment. Now more and more LED lights also used electronic ballast because it’s lighter and even is integrated with the light .And more, it is as starter, which can remove the individual starter. And improving the current frequency or current waveform to adjust the phenomenon of the flicker of fluorescent lights. Let fluorescent light can use DC power supply.
The electronic ballast is a conversion device that converts the power frequency AC power source into the high frequency DC power source, its basic principle is the power supply directly become DC power supply through the radio frequency interface filter, full wave rectifier and passive(or active) power factor corrector(PPFC or APEC).
Through DC/AC converter, high frequency AC power output of 20K-100KHZ, and the lamp is connected to a series resonant circuit and resonant heating filament, high voltage on the capacitor, and at both ends of the lamp, but the lamp “discharge” into the “on” state, then enter the luminous state at high frequency inductive limits current increase effect of guarantee lamp to obtain a lamp voltage and lamp current required for normal work, often set up all kinds of protection circuit, such as abnormal protection, surge voltage and current protection, temperature protection and so on.
The electronic ballast has 4 series of 16 varieties, include one common type and special electronic ballast, lamp box type is divided into 20W, 30W, 40W a total of 6 species, one for two, ordinary and special electronic ballast box type is divided into 2x20W、2x30W, 2x40W a total of 6 species, ring lamp electronic ballast is divided into 22W, 32W, 40W, a total of 3 species, last one is the quartz bactericidal lamp ballast for 35-60W a total of 1 species.
All different dimension lights are used in different field, such as the one for one and one for two light electronic ballast are designed specifically for outdoor light boxes and outdoor billboard, because it has the advantages of waterproof, high insulation performance, and the light box cloth doesn’t turn yellow because of the heat.
Electronic ballast is suitable for different occasion for general lighting. Ring lamp electronic ballast is suitable for the installation of the balcony in the home lighting, staircase corridor lighting and other public places. The quartz bactericidal lamp ballast can be used for shops, display windows, exhibition halls, jewelry stores, bars, museums, shops, etc.
Of course, the electronic ballast is more widely used in different because of its products have many advantages. Firstly what most attracts attention is the energy-saving, the lamp with the electronic ballast has low power consumption, the total input power of the lamp is decreased by about 20%, and the energy-saving effect is better.
It has no flicker and light more stable, it’s also beneficial to improve the visual resolution,improve the power efficiency, alleviate visual fatigue so that is beneficial to eye protection. Its power factor reach about 0.95, it means that not only reduces the cost of investment, but also reduces the loss of energy.
Furthermore, it has the stability of input power and output luminous flux, although power supply, voltage deviation maybe is very large, it can still maintain a constant power source, stable light intensity, energy-saving as well, the last is that can prolong the lifespan of the product. However, it has some disadvantages such as the problem of heat dissipation, because heat dissipation is an important factor affecting the lifespan of electronic ballast, and this aspect still needs to improve, but in a word , the electronic ballast has a big development space.