Patent ID: 8525077

Claim:
A welding system for performing a welding operation, comprising: a switching power source having a switching inverter controlled by a pulse width modulated switching signal to provide an electrical welding signal waveform comprising a rapid succession of individual pulses that define the waveform; a programmable waveform generation system providing the pulse width modulated switching signal in accordance with a desired waveform file; and a waveform design apparatus operatively coupled with the waveform generation system, the waveform design apparatus comprising a touch screen display adapted to display waveform information associated with the desired waveform and a waveform representative of the desired waveform, and at least one touch activation indicia, the waveform design apparatus allowing a user to modify the desired waveform of the waveform generation system by touching the touch activation indicia, wherein the touch screen activation indicia allows the user to change the displayed waveform to modify the desired waveform.