... voltage 6 function in 1:MMA,TIG,PULSE TIG,MIG,PULSE MIG,DP MIG IGBT inverter 60% duty cycle Features ... self-switch over2).6 function in 1: mma,tig,pulse tig,mig,pulse mig and double pulse mig.3 ... ).High frequency arc stating methods for tig welding4).Alternative wire feeding methods for MIG welding: ... pull and push5).IGBT inverter power source and duty cycle up to 60 ...