Re: [CAD_CAM_EDM_DRO] Re: Power needed to drive 3 nema 42 motors?

not necessarily if a sepoerate secondary is used as implied

----- Original Message -----
From: "Raymond Heckert" <jnr@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Tuesday, September 10, 2002 6:28 PM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Power needed to drive 3 nema 42 motors?


> See my ******* comment ******* below
> RayHex
>
> ----------
> > From: caudlet <tom@...>
> SNIP
> >
> > Don't use a variable transformer. Most of them are Autotransformers
> > (one winding) and provide no isolation (that's a bad thing). Either
> > order a transformer of the voltage and current range you want or get
> > creative and find a surplus unit that has several secondaries you can
>
> > use to get the voltage you want. A multi-winding transformer is a
> > versatile thing. Depending on how you phase the windings you can add
>
> > or subtract AC voltages.
> - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
> - - - - - - - - - - - -
> You can even take a secondary winding and
> > put it in series with a primary winding and use it to lower the high
> > current secondary.
>
> ******* THIS THEN BECOMES AN AUTOFORMER! *******
>
>
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