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

Electronic ballasts parts best lamp experiment 1, see power 2, to see the pressure drop of the input power and output power, the smaller the better. The electronic ballasts good or bad judgment can only be connected to the lamp test. General users of electronic ballasts good or bad judgment, you can use the following method: lighting, noise value with the ear line, good electronic ballasts can be silent or sound insignificant, must be better than inductance ballast. Lighting, observation lamps flicker-free, roll again starting two phenomena, the first 1-3 seconds after the lights, the lights directly to the maximum brightness, preheat start on for 1-3 seconds (non-maximum brightness), after reaching the maximum luminance. 3, the measured voltage, this approach is more professional, need a multimeter. Binary black and white lines, 220V AC. Four for the output, typically two red line, two blue lines. After power-on, according to the manual outlet voltage, consistent with the specification can be basically judged to be normal electronic ballasts.3 the measured transistor and electronic  ballasts temperature. 4 it depends on the component material quality.