Re: [CAD_CAM_EDM_DRO] Re: 80V Toroid & Ferrite Beads

Hi Carlos

If your transformator is a toroid type, you should be able to remowe
windings from one of the 40 volts winding
until you reach
50 - 55 volt ac total, Just remember that you can't use the centertab no
more when rectifiring the ac.
You have to use a bridge rectifirer.

You could also hook the transformer up in parallel,
and then applying more windings to the transformer,
until you ended up with 50 - 55 volt ac. Be aware to use a wire that can
handle the current.

good luck

Jens Hedegaard
Denmark

----- Original Message -----
From: "Carlos Guillermo" <carlos@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, December 10, 2003 10:30 AM
Subject: RE: [CAD_CAM_EDM_DRO] Re: 80V Toroid & Ferrite Beads


> Thanks Jon -
>
> It's starting to become very obvious to me! BTW, how could you
> determine the proper ends of a winding to hook up in parallel if
> the terminals aren't lableled?
>
> Regards,
>
> Carlos Guillermo
> VERVE Engineering & Design
>
> -----Original Message-----
> From: Jon Elson [mailto:elson@...]
> Sent: Tuesday, December 09, 2003 9:56 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: Re: [CAD_CAM_EDM_DRO] Re: 80V Toroid & Ferrite Beads
>
>
> Carlos Guillermo wrote:
>
> >Hi Jon -
> >
> >I was under the impression you could parallel the windings on a
> >center-tapped transformer as well. What happens if you try? It
> >seemed to me that whether you brought out two leads or one lead
> >from the same middle point in a winding, you could just use that
> >point as one terminal, then join the other two ends for the
> second
> >terminal of a paralleled setup. Is the direction of the each
> >winding critical here?
> >
> >
> Yes. What you suggest would short out the winding, causing it to
> draw
> huge current from the wall socket. it will either destroy the
> transformer
> or trip a breaker in your fusebox. The direction of each winding
> is
> absolutely important, as it determines the phase relationship of
> the
> AC wave. This is how you get 240 V across the two hot terminals
> in the fusebox, but 120 V from neutral to either hot one. That is
> exactly how the pole transformer is wired - a center-tapped
> winding.
> Don't try shorting the two hot wires in the fusebox together to
> get
> more 120 V current. It will explode.
>
> Jon
>
>
>
>
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