Nick, I'm almost ready to start looking for circuits and roll my own, as an alternative to smoke and mirrors. At least when my own creations emit smoke, I know who to blame for it.<G> I do indeed have a kilowatt adjustable "12" volt power supply, did blow one of the power transistors weeks after building it, corrected the problem, and haven't had any issues since. So when these companies tell me how incredibly complex, difficult, even impossible some things are....uh-uh. I'm reasonably sure I could add a waveform generator
to the regulator
in my power supply, teach the bootstrap transistors how to sing a sine wave, move the power transformer (oh yes, analog) to the other end of things, and funny
thing, it would do the job. Adding frequency stabilization and all...still not rocket science, I'm sure Shenzhen's already done it.
Somewhere in between "You want how much?" and "Please don't laugh when I say warranty" there's bound to be a solid choice.<G>
I'll keep making haste slowly and try to find that one.