Re: [CAD_CAM_EDM_DRO] Transformer wiring

Jay,
Unless you are sure you will have no other future use for the Xmer,
cut it off, cap it, whatever.
Personaly, if you are building up a bipolar pwm stepper supply, I would
seek out a 28VAC xmer instead. 24VAC = 33.6VDC (no load). Kinda low.
I'm also assuming you are using L298/L297 chips that hasve a ~46V limit.
RichD
"J.Critchfield" wrote:

>
> Rich,
>
> So do I just cap off the center tap?
>
> Jay
>
> ----- Original Message -----
> From: "RichD" <cmsteam@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Sunday, May 12, 2002 8:15 AM
> Subject: Re: [CAD_CAM_EDM_DRO] Transformer wiring
>
> > Jay,
> > You want max voltage from the xmer.
> > Don't use the green/yellow wire (a center tap).
> > Connect the green wires to the AC terminals of a full wave bridge
> > rectifier (4 diodes in a ring).
> > The xmer is stepping down AC voltage (24/120) and stepping up current
> > capacity (120/24), therefore, the sec wire has to be larger.
> > RichD
> >
> >
> > jbolt001 wrote:
> > >
> > > I have a 24vdc 10amp single secondary transformer for my PS. The
> > > pimary has 2 black #20 wires and the secondary has 3 #14 wires. the
> > > two outer wires are solid green and the center wire is green with a
> > > yellow stripe. How are the 3 secondary wires hooked up to the bridge
> > > rectifier and why is the secondary wire size larger than the primary?
> > >
> > > Thanks