Recent content by zakipu

Unfortunately SCRs are rated for current and voltage not power. The 200A rating is what it can handle continuously at any voltage. The peak current rating should be around 6-7000A, so the SCR should survive depending on the total resistance of the setup and the voltage. Also, hockey puck SCRs...

The main tricky bit with low voltage is the severely decreased welding current. It might not be enough to generate a large enough current to melt your metals. As for an 'ultra' cap having a low ESR, can you give us a link? We can use that. :o ~Z

I've followed this thread (and a few others), so I think I'm ready to make a cheap-as* welder. Looks like about $200 and not $100, but whatever. I've been following this thread for many rereads. As an aside, I've been an embedded systems engineer for well over a decade. Not quite as cool as...