
It's not all bad news though. The OLTC2 design (with a lot of secret tweaks) formed the basis for an artificial lightning show at a Danish science park that I developed with Finn Hammer. I recently saw another hobbyist build an even bigger OLTC using my driver design, and I like to think that the work I did on large IGBTs might have helped Steve and Jimmy with their DRSSTCs too.
Finally, things recently came full circle when Terry Fritz brought out his new SiSG. He basically took an OLTC, modified it to work with a series stack of IGBTs, and put back the iron cored HV transformer that we all busted our brains trying to get rid of.