Patent ID: 8283598

Claim:
An electric arc welder for performing a pulse welding process between an advancing electrode and a workpiece at a voltage of between approximately 17-22 volts with a waveform including a welding current with a succession of pulses each pulse of said succession of pulses having a peak current and a background current, said electric arc welder comprising: a circuit to reduce said welding current during creation of a short circuit, a short detecting circuit creating a signal upon occurrence of said short circuit between said advancing electrode and said workpiece for initializing a short circuit clearing routine, said clearing routine comprising increasing a value of said welding current from an initial first value at a short circuit detection time to a higher second value at a short circuit clear time, and a boost circuit to create a plasma boost pulse immediately after creation of said short circuit clearing routine, said boost circuit continuously increasing said welding current from at least said higher second value at said short circuit clear time to a third higher value at an end of said boost circuit peak portion, and resulting in a gap between said advancing electrode and said workpiece, said electric arc welder further comprising: a first timer for starting said succession of pulses at a given time and a second timer for creating said plasma boost pulse at a given position between said succession of pulses.