Bob Engelhardt wrote:
Oh, that's cool! I wanna' build one. Maybe use a bunch of microwave
oven transformer coils. I wonder if there's anything special in the
controls. E.g., a special waveform driving the electromagnets.

Hmmmm, maybe rip off the "I" laminations, remove the coils, and replace them
with something custom wound, leaving the "E" laminations facing up?

Jon