At 07:31 AM 8/23/2012, you wrote:
>Yes, usually treadmill DC motors are used for lathes, but those are
>unavailable here, and expensive to ship from places they are
>available:)
>Technically wound-stator motor with DC connected across it should be
>equivalent to permanent-magnet motor.
>But I'm not quite sure if it's that simple.

Yes, it is just that simple. Many commercial motor controllers have a
relatively low-current output to drive the field coils.

Best regards,

Spehro Pefhany --"it's the network..."            "The Journey is the rewar=
d"
speff@interlog.com             Info for manufacturers: http://www.trexon.co=
m
Embedded software/hardware/analog  Info for designers:  http://www.speff.co=
m



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