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