What is an electronic ballast? What is a inductive ballast? What's the difference between these two? How to distinguish? What's the difference between today's LED?
Electronic ballast is an alternating current that changes the frequency (50HZ / 60HZ) alternating current to a higher frequency, and can make one or more fluorescent lamps normal A converter that starts and stabilizes the work. The basic principle: use electronic components to make up high-frequency circuit. Turn the light ac power supply into direct current, and then change from the inverter For high frequency alternating current, the high frequency voltage of 20 ~ 50KHZ is produced by oscillating circuit to start and light fluorescent lamps, and adjust correctly to match the lamp. Meet the starting voltage of different power lamp, the voltage of the lamp and the current of the lamp. Advantage - electronic ballast has the following advantages:
Ballast: in series with the lamp. Can automatically restrict the increase of the starting current (the lamp tube negative resistance effect), make the lamp tube obtain stable lamp voltage, the lamp electricity Flow, a ballast device for the normal working of fluorescent lamps;
The tube fluorescent lamp is the gas discharge lamp, the traditional use must have the "regenerator" and "ballast" : The regenerator: and the ends of the lamp. When energized, the high voltage can be produced, forcing the lamp to "discharge" - the guiding light, which is the normal working of the fluorescent lamp The initiator of the work;
Power factor improvement (up to 0.9 from 0.5 of the inductance ballast), the power grid utilization is increased, and indirect energy saving is achieved. High luminous efficiency, low thermal energy and low power consumption. The power factor is high, the input current is decreased, the power wiring installation demands and
The starting voltage of fluorescent lamp, lamp voltage and lamp current are related to the light pipe category, the use of the regenerator and the ballast must be matched, otherwise the effect will be Lamp tube life, not even work; Inductance ballast (also known as ferromagnetic ballast) is made of iron core and enameled wire. Simple structure, low cost, but self-consumption (40W ballast The actual power consumption is 48W, which produces "hot" and "noise", and also produces 100 ~ 120HZ frequency flash for low-frequency work, and is large and heavy.
