Artemus wrote:
See this http://www.metalworking.com/dropbox/FunWithMOTs.pdf
all the way down at the bottom.
I've played with MOTs and have found that by wiring the primaries of
2 MOTs in series and connecting to 120VAC they don't saturate. This
keeps primary current lower and the core doesn't overheat when left
powered on for an extended time. (secondaries were removed)

Ummm ... I'm going to have to revisit this. In FunWithMOTs, I mention
that I used the secondaries to make electromagnets 'cause the primaries
drew too much current (I could only put 12v on a primary). But I don't
remember how much "too much" was. Probably the 6A that my variac will do.

I also used DC. I don't remember why, exactly, but I think it was just
'cause of the buzz on AC.

Bob