No, they're not the rock band. What do the two types of welding currents – A.C. and D.C. – stand for?

Yes, the band AC/DC is on the Highway to Hell. But its welding-related counterpart is even hotter. The abbreviations stand for Alternating Current and Direct Current, with D.C. applied most frequently in stick welding and A.C. working as an alternative option.

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