Re: 28v power transformer

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@v...>
wrote:

> Hook up the cap and them measure it.
>
> Andy Wander
> Verrex Corporation
>
>
> -----Original Message-----
> From: stcnc2000 [mailto:thinkcnc@h...]
> Sent: Wednesday, April 21, 2004 5:46 PM
> To: CAD_CAM_EDM_DRO@yahoogroups.com
> Subject: [CAD_CAM_EDM_DRO] Re: 28v power transformer
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, Andy Wander <awander@v...>
> wrote:
> > and only get about 17vdc at
> > > > rectifer. The transformer i'm using is (MPJA) LP-437 18vct(9-

0-

> 9)
> > > > 2amps.
> > > > > >
> > > > I'm using a full-wave bridge.
> > > > It is 4 diodes and 4 terminals.
> > No load, 20 vac into the bridge, No Filter Cap connected yet have

a

> 15,000 uf 50v, Yes the bridge is hook up correct AC to Ac and then

i

> measure across + and - terminals.
>

After hooking up the Cap I got 27vdc which is OK. I just learn alot.
I have one more thing to ask. Out of the four wires on the primary
side I only hooked up two. A red and black. What about the other red
and black wire?

> > Is this measurement with any kind of a load on the supply?
> > Have you measured the AC voltage going into the rectifier?
> > What kind of filter capacitor are you using?
> > And are you sure the rectifier is hooked up correctly?
>
>
>
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