Thyristors could do it, but this is actually a theoretical model (I'm not building anything, I just need a good off-the-record quote for a practical model being able to do the job)
involving periodic bursts of gamma ray radiation, and I have limited this part of circuitry to tubes.
To be more...
Hi there, I'm not sure if this belongs in this specific part of the forum, but please warn me if it doesn't
I've been searching through all kinds of thyratron databases (this is not normally my field of expertise (electron tubes)) in hopes of finding one which could do the job of making square...