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

Hi Jeff, Lloyd,

I'll have to disagree with you Jeff. if the transformers have the same
output voltage, they CAN be wired in parallel! It's done all the time.
The phase of the transformers must be observed. That is, they must be
connected such that the leads of each transformer go + at the same time,
other wise they will buck. Perhaps that is what you meant.

See my Gecko Driver/PS schematic in the files section under Driver/PS:

http://groups.yahoo.com/group/CAD_CAM_EDM_DRO/files/DriverPS/

Alan KM6VV
SherlineCNC


microboter wrote:

>
> 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).
> >
> > <SNIP>
> >
> > 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.