PULSE CONTROLLER OF SILICON RECTIFIER ELECTRIC WELDER

The utility model provides the pulse controller of a silicon rectifier electric welder, relating to an arc-welding machine with pulse currents. A silicon controlled rectifier is connected in series behind a bridge rectifier in the current control circuit of the silicon rectifier electric welder; a triggering loop is arranged on the trigger electrode of the controlled silicon; the triggering loop comprises a sequence circuit, a master synchronizer, a peak pulse generator, a control signal synthesizer, a phase shift circuit, a synchronous circuit, a trigger pulse forming circuit and a trigger pulse output circuit. The utility model is arranged on part of internal feedback magnetic amplifier type silicon rectifier electric welders to widen the range of application and to be used for replace low-frequency pulse tungsten argon arc welding machines.