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by stergios 2782 days ago
Mig welders are used as temporary power supplies all the time. They allow for variable DC voltage (some offer AC), current, wave forms, and the bigger one have close to 100% duty cycle. Here's a guy using a mig welder to power a 15 ton radial arm dill. https://www.youtube.com/watch?v=2zYrabDGIEg