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