{HEAD ~ Welder} includes {TAIL ~ a controller} with a digital processor , sensor for reading instantaneous weld current, and circuit to convert the instantaneous current into a digital representation of the level of instantaneous weld current 
{ HEAD ~ Welder } includes { TAIL ~ a controller } with a digital processor , sensor for reading instantaneous weld current , and circuit to convert the instantaneous current into a digital representation of the level of instantaneous weld current
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH