That could work, if the gates are pulsed properly. Wear eye protection. Regards, Mark On Wed, Jul 24, 2013 at 11:24 AM, veegee wrote: > On 2013-07-24 12:26 PM, Mark Rages wrote: > > Spot welding is generally used to connect batteries. Seach "spot > welding" > > on youtube to see it being done. > > Spot welding is what I'll do. I can probably do it with my spare car > battery since the weld doesn't need to be big and I don't mind multiple > welds per terminal. > > I don't trust the morons on the Internet anyway. They all just seem to > be copying each other's MS paint diagrams. Thyristors for an AC spot > welder makes sense. But what's the point for a capacitor discharge/DC > spot welder? Unless, of course, it's a gate turn off thyristor or > something like that. > > I'm thinking a few (8) MOSFETs in parallel rated for ~250A pulse and a > 12V car battery will work. Large flyback diode across welding terminals, > of course. > -- > http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive > View/change your membership options at > http://mailman.mit.edu/mailman/listinfo/piclist > --=20 Regards, Mark markrages@gmail --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .