Welder made with microwave oven transformer | Electronics Forum (Circuits, Projects and Microcontrollers)
MD-601AMR-1 Microwave transformer for parts/spot welder welding machine | eBay
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Building a Spot Welding Machine From a Microwave Oven Transformer : 7 Steps (with Pictures) - Instructables
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spot welder design using microwave transformer. advice on use of relays, capacitors, and timer circuits would be appreciated. more info in comments. : r/AskElectronics