ha ha SP130 was too powerful , so they retagged it

SP170 ...


Lincoln SP130 had a much higher output than the [130]
should have .


but i bought Century for the dynamic voltage control .
this is needed for stitching and spot with MIG .

Some old MIG use input side relays to shut off a stitch ,

L-Tec MIG used 2 opposite SCR's , good Green Box .

But Hobart 250 did it wrong placing huge SCR in a Diode
bridge at high amps side . STUPID .