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

High pressure sodium ballasts starts the output limiting circuit, including a trigger circuit and a starting circuit, the starting circuit has two transformers T3, T4, the trigger circuit provides a start signal for the start circuit; characterized in that the starting circuit of the two transformers T3, T4, theRoom is also connected with the two relay J1, J2, the secondary winding of the two transformers in series, the two relays in the starting circuit after striking voltage is generated by the control circuit provides a signal occurs Actions, so that two transformers from limitingthe role of the primary coil is connected in series is converted into a parallel connection. Thus, on the one hand lamp can reliably trigger the start, and the output power of the electronic ballast is also able to meet the requirements; impedance drop in the other hand in parallel are connected in series when the fourth be controlled, so that the temperature rise of T3, T4 , the electronic ballasts overall temperature rise decreased by 30%, improve the stability and reliability of electronic ballasts.