Abstract: A high-intensity gas discharge lamp power frequency lighting electronic ballast, including electromagnetic interference filter, rectifier circuit, inverter, ignition circuit, current-sense resistor, is in the rectifier circuit and inverter and current-sense resistor A valley-filled power factor correction circuit is provided, a control circuit is arranged between the electromagnetic interference filter circuit and the inverter circuit, and a high-frequency switch drive circuit is arranged between the valley-filled power factor correction circuit and the control circuit, and the electromagnetic interference filter is An inverter drive circuit is provided between the input terminal and the inverter. The utility model provides a power frequency sinusoidal current for a lamp tube, no stroboscopic phenomenon, high power factor, silent resonance during operation, small crest factor, simple structure and low cost, and only one low voltage level of the power frequency energy storage component in the circuit. The electrolytic capacitor helps to extend the life of the lamp, which makes it more reliable and has good practical value.
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