pulses for both welding and cutting, with the latter obviously requiring a long series of pulses. [Radu] started out using a relatively small capacitor array to power the device, but has recently ...

That need is what led [Erwin Ried] to purchase a small, battery-powered spot welder from a maker in Korea and test it out on nickel strips. The spot welder [Erwin] used is the work of a user by ...