Fluorescent lamp electronic ballasts come out in the early eighty s, first developed by philips company.
Because it compared with the traditional inductive ballast, especially on the electric performance is more unique.
So the electronic ballast is a strong vitality.
There are various fluorescent lamp electronic ballast circuit design, in science today which progresses by leaps and bounds, the design of the fluorescent lamp electronic ballast is becoming integrated or modular, the purpose is to make the circuit structure is simple.
Electric performance is more reliable, stable and safe.
The power factor of the fluorescent lamp electronic ballast, lamp current crest factor, current harmonic content is generally referred to as the three technical indicators.
In general fluorescent lamp electronic ballast to achieve three indicators of the standard is difficult to reach the customer at the same time, adopt HD9712 module of the electronic ballast can realize the three indicators, and can reach the standard of the index requirements stipulated in the 'H' level.
Put through power supply, electricity flows through F1, C1 input HD9712 '1, 2,' the foot of the circuit.
Via HD9712 rectifier circuit, current tracking and grading filter output from '3' foot after about 300 v dc voltage, as the ballast working power supply;
The voltage after R2 step-down to the C3 and D2 sawtooth wave generator.
By C3, D2, producing a sawtooth wave pulse to trigger the oscillator circuit, the generator set to work.
The working frequency of 25 to 30 KHZ high-frequency voltage sent to L4 and C4 booster, the fluorescent tube gas ionization, lamp light.
At the same time a small amount of current through the C4 constitute a loop to auxiliary heating filament, to maintain the stability of lighting.
Is the guangdong electronic ballast well-known enterprises and professional LED light manufacturer and electronic ballast manufacturers, we can according to customer requirements and the actual use of the environment, customized products and provide integrated solutions for customers, for the general customers to provide quality and efficient products.
We look forward to cooperate with customers and friends from all over the world hand in hand, create brilliance.
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