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

High pressure sodium electronic ballasts, including EMI filter circuit ballast and the APFC circuit, independent drive circuit LC oscillator circuit, the start trigger circuit, the current sampling cores and MCU controller, high pressure sodium lamp interface with current sampling loop, MCU controlrunning through high on the sampling of the current measured value (lamp short circuit) and low (light open circuit), a comparator to detect an abnormal state of the lamp output circuit within a half cycle in the control driver turns off the high, low driving circuit. More effective protection than the program-level protection in the circuit before safety, another start trigger 3 seconds after shut down to prevent cause long open lamp ignitor damage to other electronic components.