40A Spot Welding Control Panel with Digital Display

On the Internet, there are many examples of how to do spot welding for welding nickel tape to acb. As the power unit, transformers from televisions, LATRs, microwave ovens are used ... For high-quality welding, without burnouts and underheating, they use the control board, which I offer. Connection diagram in the photo. The triac in the circuit is 40A, which allows you to work with a transformer up to 7 kW. detailed review https://mysku.ru/blog/china-stores/63557.html