METHOD AND APPARATUS FOR CONTROLLING ARC WELDING MACHINE

摘要

The appts. consisting of a welding condition setting section (13) storing a welding electric current and voltage; a channel selecting section (12) selecting the stored welding condition by channels; and a CPU (14) generating an electric signal corresponding to the selected welding condition. One electric signal is supplied to a switching drive section (17) via a PWM circuit section (16) to drive a switching section (2) for converting the DC power source into the high frequency pulse type AC power source, and another electric signal is supplied to a wire supply section (8) for driving a welding-wire supply device (6).