Do it yourself place welders normally use superior-driven components that can be a little bit terrifying, presented the potential for harmful malfunctions. [Wojciech “Adalbert” J.] designed his capacitive discharge location welder to be safe and sound, effortless to make, and forego the microcontroller.
Several assignments perform excellent with just a one Li-ion mobile, but when you have to have extra power, you have acquired to start connecting extra cells alongside one another into a battery. [Wojciech]’s location welder is intended to be just powerful sufficient to weld nickel tabs on to a cell devoid of any overkill. The capacitor financial institution takes advantage of nineteen Nichicon UBY 7500uF/35V capacitors, all wired in parallel applying solder wick saturated with solder. They sit atop on a perfboard with metallicized holes to have the significant latest.
[Wojciech] has detailed every action of building the welder, which includes changes to the off-the-shelf relay board and adding a potentiometer to the move-up converter board. The level of detail can make this appear to be like a good setting up position if you are hoping to hop into the earth of Do it yourself spot welders. Secure is usually a relative term when working with large run products, so be thorough if you do attempt this make!
Diy place welders have graced these electronic internet pages several occasions, such as this just one constructed with security in thoughts, and this other a single that was decidedly not.