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A drag, drag the second, dragging three-terminal electronic ballast
Line structure: APFC circuit + change + transistor output, T5 bracket full voltage only.
Circuit principle: the input voltage of the IC by the APFC controlled, the output voltage of 400V regulator, after the inverter circuit formed by the transistor and finally the lamp
Line features: power factor up to 0.998, the current harmonics is less than 10% of the rectified voltage up to 400V and the lamp warm start cold start to improve significantly the number, so that a longer lamp life, line by adding abnormal load protection circuit, when Adverse lamp, the effective protection of the ballast from damage.
Line advantages: high power factor, harmonics up to L level, the line stability. Long life
Line Disadvantages: high cost, the line complex, high production costs, is not easy to do in the compact lamps
Jinan electronic ballast manufacturers
