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

Generally depends on the electronic ballasts or magnetic ballast, even determine the electronic inductor, still depends on the manufacturer, general electronic ballast power factor of about 0.98, the low inductance ballast 0.6 --- 0.8 dollars. High pressure sodium lamp is a high-intensity gas discharge lamp. Negative resistance characteristics due to the gas discharge lamp, if the lamp is individually connected to the grid, its working condition is unstable, as the discharge process continues, it will certainly lead to unlimited increase in the current circuit, the last until the lamp or circuit parts overcurrent burned.