Stud welder runs on 120-V, single-phase power

Nelson Stud Welding has introduced the N550c Arc Charger. Its input charger system converts the 120-V wall outlet power into digitally controlled stored energy for welding studs up to 0.375 in. dia. The portable unit can run off a small 5-kW generator, allowing fastening in remote places.

Its electronics provide constant current for a smooth weld arc, and precisely controlled weld parameters allow the weld system to apply a variety of fasteners to the base material.