Re: current rating of transformers

--- In CAD_CAM_EDM_DRO@yahoogroups.com, Jon Elson <elson@p...> wrote:

> turbulatordude wrote:
>
> >Since I'm looking at a 21 amp 48 volt supply, that could be a

single

> >48 volt transformer.
> >
> >
> >
> Do you really NEED 1008 Watts? Continuously? Note that most of

these

> unregulated supplies can deliver twice the continuous rating for a

couple

> of seconds every minute without damage. So, in almost all cases,

you

> can use a supply half the size of your worst-case peak current draw.
> That's what the capacitors are for is to supply peak currents.
>
> Jon

NO.

you are exactly correct.

I have 3 Gecko's and want to have the ability to run them with a
power supply. at 60% of rated current, they only need 12.6 amps, and
that assumes the Z is in full speed motion a concurrently with the X
and Y.

Seems like a true 10 amps would be more than enough.

The MPJA transformers are $18.00 each and to serial and parallel them
I could get 11 amps with 4 units.

This does offer the possibility of 24 volts, 36 volts and 48 volts
out of the secondary so that is pretty neat. not required, but neat.

Any idea where to get a larger single transformer at a better price ?

Dave