100W full-wave single-junction transistor trigger doer control circuit It is suitable for constant or variable speed wire feed control wire feed motor. The input control signal
is given voltage (RPs by the Master potentiometer adjustment) and the motor feedback voltage (from potentiometer RP4 taken in) superimposed. When RP4 same position, the motor speed depends on RPs. When using an electric arc voltage feedback control, As, A6 signals the end of the introduction (the amount of feedback is adjusted by potentiometer RP6) quite in RP.. When the arc length increases, the arc pressure is increased when the string l motivation bone incense coupled with feedback voltage increases, I turn to punish Shen j motivation increases, and continue to maintain the original arc welding.