Re: [CAD_CAM_EDM_DRO] Re: Power supply transformer setup questions...

Jeff,

Why do you say that it will not work.

If you have two identical transformers you should be able to wire the
outputs in parallel as long as you have the phase correct. If the outputs
are color coded, you should be able to wire them correctly. If wired
incorrectly they will buck.

This should be no different than using a transformer with two separate
output windings that are wired in parallel.

Bob Campbell

----- Original Message -----
From: "microboter" <jdavis211@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Wednesday, September 10, 2003 6:56 AM
Subject: [CAD_CAM_EDM_DRO] Re: Power supply transformer setup questions...


> Wiring the 2 transformers in parallel seems like a nice clean
> solution to your current problem of needing 6.7 amps to drive your
> motors.
>
> In a nutshell "NO" you can't do this. The transformers don't like
> being wired in parallel. They will for a lack of a better term buck
> each other. You will need to drive each Gecko with a separate 3 amp
> or so transformer/ power supply combo, or one large one.
>
> hth
>
> Jeff
>
>
> --- In CAD_CAM_EDM_DRO@yahoogroups.com, "Lloyd Leung" <lloyd@l...>
> wrote:
> > Is there a method of wiring two transformers of the same voltage
> together to
> > increase the amperage that they can supply? If possible, how
> should I wire
> > this up to produce a power supply? Is this a safe idea for wiring
> up gecko
> > G201 drives?
> >
> >
> >
> > I'm looking to go from 50VAC to 70VDC.
> >
> >
> >
> > The three stepper motors I'm going to use are: two 3V/3Amp, one
> 4.2V/3.5Amp.
> > The sum of amperage required for the motors is 10AMPs. So I
> require 6.7amps
> > (2/3rds of sum).
> >
> >
> >
> > The transformers I'm looking to _some how_ link together are:
> >
> > 167P50 (50VAC/5Amp)
> >
> >
> > http://sales.digikey.com/scripts/sales.dll?
> action=lineitem;itemseq=14201596
> >
> >
> >
> > 167L50 (50VAC/2AMP)
> >
> >
> > http://sales.digikey.com/scripts/sales.dll?
> action=lineitem;itemseq=14201598
> >
> >
> >
> > Additional transfers from hammond manufacturing are
> listed here:
> >
> >
> http://www.hammondmanufacturing.com/5cpwr.htm
> >
> >
> >
> >
> >
> > Also, there is this little vexta stepper motor I have that I may
> want to use
> > for a rotary table:
> >
> >
> >
> > Vexta PK569AUHA (2.8Amp/0.55 oHm (so 1.54V??))
> >
> >
> >
> > Is there a way I can add this drive into the power supply, or
> should I build
> > a completely different power supply for this axis? If I use 50V to
> this
> > little motor, it's going to cook itself.
> >
> >
> >
> >
> >
> > So far, I have the gecko's and the motors... I would like input on
> how I
> > should setup my power supply, thanks.
> >
> >
> >
> >
> >
> >
> >
> > Lloyd, in Toronto.
> >
> >
> >
> > [Non-text portions of this message have been removed]
>
>
>
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