spot welder design using microwave transformer. advice on use of relays, capacitors, and timer circuits would be appreciated. more info in comments. : r/AskElectronics
Spot Welding Machine Welder Supporting Power Transformer AC 220V-9V AC110V-9V | eBay
12V 1W Mini Led Downlight Met Transformator Plafond Spotlight Slaapkamer Keuken AC100-240V Spot Light Trap Kast Party Lamp - AliExpress
How to make a high-watt soldering unit | ELECTRICBIKE.COM