13+ Battery Spot Welder Schematics. Version 2, the welder timer. Have you considered using tungsten rods for welding electrodes?
Simply, if it doesn't look good, it probably is not. I think if i built another spot welder, i'd go with 1 farad of normal capacitors instead of ultracapacitors. Before starting on this project, there are a couple of videos you should check out.
My design of a cd spot welder.
13+ Battery Spot Welder Schematics. Current is adjust to the level that wile you welding batteries are not overheating. The ultras are intimidatingly powerful. I always wanted a spot welder, so i decided to built one. The fact that there's not a microwave oven transformer to be seen is.