Cheap Spot Welder Circuit. The best way to understand how it works is to check a demo on YouTube. These little 18650 spot welders can be found at several online retailers.
Interesting use of recycled materials the only problem is that there is no overcurrent protection fuse or circuit breaker which could be a dangerous condition in terms of electrodes welding to one another or otherwise resulting in a constant-on and potential for melt down of components. There are a plethora of welders out there on eBay and Aliexpress just search for battery spot welders. One five-star reviewer described This welder is awesome.
These little 18650 spot welders can be found at several online retailers.
Interesting use of recycled materials the only problem is that there is no overcurrent protection fuse or circuit breaker which could be a dangerous condition in terms of electrodes welding to one another or otherwise resulting in a constant-on and potential for melt down of components. An Arduino Nano based Spot Welder for battery welding. SUNGOLDPOWER MIG Gas and Gasless Welding. No hacking of microwave transformer no Arduino no relays no timers no capacitors no circuit boards no ICs.
