On 2012-10-27, wrote:
On Mon, 24 Sep 2012 17:54:23 -0500, Jon Elson
wrote:

Cross-Slide wrote:

I remember reading a book about motors, and one of the more interesting
ones was referred to as a "Printed Pole Motor" IIRC.

I believe they are now used in high-end machining centers as a way
to get very wide speed ranges at full HP without using gearing or
belt drives. I think they are also called switched reluctance
motors. They do not use any permanent magnets, but rewrite the
poles on an iron rotor.

Jon
Apparently " printed" pole motors are now called "written" pole
motors. See this link: http://www.meridiumpower.ca/C/c_1.html for an
explanation.

Only called that by this maker. Note the (R) (registered
trademark symbol -- the letter 'R' in a circle) everywhere it is used,
and this note about ahla way down (where the (R) symbol is showing as
"\256" on my screen, showing that it is a non-printing character on this
system. But it may show up properly on yours.

================================================== ====================
Written-Pole® is a registered trademark of Precise Power Corporation.
================================================== ====================

And the printed motors which I have seen (and which I have a
few examples of) are DC motors, while these are AC for the standard power
line -- single phase or three phase.

Enjoy,
DoN.

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