Cheap Spot Welder Circuit. Kerpu Rechargeable Portable Spot Welder Machine. Spot welders are used to fuse thin sheets of metal together.
Here are a couple of affiliate links if you want to help the channel. 4 Comments Rob - February 22 2015 said. An Arduino Nano based Spot Welder for battery welding.
When power is connected This DC Power source charges the capacitor if the switch is pressed it activates the Relay 1 and charge of capacitor activates the Relay 2 Since capacitor can hold very few amounts of energy it quickly discharges and Relay 2 turns off.
Other materials included scrap 26 22 two copper screw type lugs two copper welding cable lugs two MIG welder. When power is connected This DC Power source charges the capacitor if the switch is pressed it activates the Relay 1 and charge of capacitor activates the Relay 2 Since capacitor can hold very few amounts of energy it quickly discharges and Relay 2 turns off. A DIY spot welder for batteries is easy to build with these free instructions. Typically one 40Ah 440A battery delivers enough current to get good welds with.
