China manufacturer of magnetic ballasts for metal halide flood lights & hps flood lights

With high-power discharge lamp matches the electronic ballasts comprising: a filtered rectifier, the AC mains frequency of the voltage is converted into a DC voltage; pulled constant circuit, the output voltage, a power factor to improve the power factor, andwith the LC filter circuit to filter clutter; one half-bridge driver circuit, including a resonant frequency of a controlled digital circuit, in order to control the operating frequency of the half-bridge driver circuit, thereby changing the impedance of the LC matching network; a sampling circuit,sampling; the operating frequency of the circuit to a signal processing circuit for sampling the resultant signal of said sampling circuit for processing, automatic frequency and controlling said digital circuitry; to a switching power supply to said digital circuit to provide a stable working voltage. The high-pressure sodium ballasts circuit of the discharge lamp in different use reliable start and run at their rated power.