Jim, I think that means I won't be seeing one any time soon, inside
something that I might take apart.

I don't recall if 3-phase VRC drum motors have permanent magnets, although
the capstan motors do, but I was thinking in terms of motors that do real
work/machine power in my earlier reply.

--
WB
..........


"Jim Wilkins" wrote in message
...
On Mar 3, 12:52 am, "Wild_Bill" wrote:
...
AC PM motors don't exist, as far as I know.
...

See Tim Wescott's reply.

Segways use 3 phase AC motors with an -extremely- strong permanent
magnet rotor. They stick to the sheet metal of lab benches so hard the
bench slides before they pull loose.
http://www.moonbasecafe.com/summativ...2/science.html

jsw