Kweld Schematic — __hot__

Have you built a welder using the KWeld schematic? What power source are you running? Drop a comment below!

: Large copper bus bars are integrated into the PCB to distribute massive currents with minimal resistance. This mechanical design is critical for maintaining the high current levels required for welding pure nickel strips up to 0.3mm thick.

Typically, the system pairs the KWeld controller board with a or a supercapacitor bank . The schematic is built to handle massive instantaneous currents (often exceeding 2000A) without melting its own traces, which brings us to the physical layout.

It utilizes an extremely rugged MOSFET-based power switch and a mechanical current bus design. This allows the device to handle a maximum switch current of up to 2000A with an internal resistance of only ~120µOhm.