Apparatus for controlling a consumable electrode pulsed-arc welding power source

摘要

In a consumable-electrode pulsed-arc welder using a CO2 shielding gas, a voltage detected by a detector (13) is supplied to a comparator (14) which also receives a reference voltage from a voltage setting circuit (15). When the detected voltage exceeds the reference voltage, a droplet detachment detection signal is issued. Then, an output adjusting circuit (16) lowers the welder output to a level Ir lower than the ordinary current Ip.