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Many use the transformer out of a microwave oven, but I am fairly certian there is some disassembly and rewinding involved. Harbor fright used to have a decent cheapo spotwelder, not good enough for production but adequate for home use. ( low cycle duty)
I have a parked 2.5 kw 48 volt server UPS that probably has transformers capable,, but it weighs a hundred pounds
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casual notes from the underground:There are some "experts" out there that in reality don't have a clue as to what they are doing.
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