Re: [CAD_CAM_EDM_DRO] 90v dc brake voltage

Eric,
I'll pass on the 3phase question at this time.
But as ,far as using 2 transfomers back to back as an isolation
transformer, I've only been using that idea when I need one since 1968.
And even then it was an old and useful trick.
Bill Higdon
Eric Keller wrote:

> I have a Gidding and Lewis servomotor with a 90vdc
> brake. They suggest that I can just take the 115vac
> line from the wall, pass it through a bridge and use
> that for the voltage (there is something else in the
> circuit, but no isolation). That impresses me as a
> good way to kill myself.
>
> Since I don't have any isolation transformers, I was
> thinking about taking two transformers of suitable
> amperage rating and puting them back to back. This
> should work, right? Do I have to worry about
> saturation?
>
> On a similar vein, I was thinking that there is no
> harm in using a 3 phase transformer on a single phase
> circuit. Am I missing something in my ignorance?
>
> Eric "I'm going to die sooner or later, hopefully not
> today" Keller
>