Re: [CAD_CAM_EDM_DRO] Re: SPINDLE speed controller, collets

usually the connection is made inside the motor housing and usually easy to
bring out as 4 wires. as for treadmill motors they are made 120 volt or 240
volt for the overseas market. cul brian f.

----- Original Message -----
From: "turbulatordude" <dave_mucha@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Thursday, June 08, 2006 12:06 PM
Subject: [CAD_CAM_EDM_DRO] Re: SPINDLE speed controller, collets


> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "BRIAN FOLEY" <ka1bbg@...> wrote:
> >
> > Hi, most treadmill motors are permanant magnet at least the ones i have
> > seen. looking at the speed control books i have here, universal
> motors have
> > two types, shunt wound and wound field. one runs on 1/2 voltage for the
> > field the other full voltage for the field. if the two sets of
> winding wires
> > a pair for field and a pair of wires for the armeture are brought to
> a speed
> > control, control should be easy.
>
> Assuming the newer router did not have an on-board speed controller,
> and assuming it was a simple 2 wire plug, would both field and
> armature wires be brought out to the plug ? or would there be some
> other circuitry inside ?
>
> I'm thinking of the capacitor start motors (yes, I know these are not
> cap start) where there is a little extra inside the motor that does
> other functions than just let the motor see wall power all the time.
>
> Dave
>
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