but could still be DC assuming it doesnt cross zero.Using an oscilloscope, @Robert Weaver found that the output of the Uptime 160 inverter MIG is not true DC at all, it is more like PWM:
MIG welder torch voltage - general question
I've been using my Uptime160 MIG for a while now and it's working fine (slightly erratic welds recently but solved with a new tip). After reading threads about voltage, amps and wire speed I decided to test the welder to see what the controls actually control and what the voltage is at the tip...www.mig-welding.co.uk