Re: Step motor voltage question

Hi Ross,

you didn't say what type of drivers you plan on using.

if you want any useable performance, you will need to look into a
voltage 15-20 times the nameplate. 5-10 times nameplate will offer
decent performance, and 10-15 will offer respectable performance, but
once you pump up the voltage, you will be amazed.

chopper drivers are the way to go with that high an amp rating, but
if you series wire them a Xylotex could get you at 30 so volts at 2
amps for decent performance.

for the 4 amp load at 65 V, you would need to move up to a Gecko.

for more information, read the white paper at www.geckodrives.com

Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, "Ross" <rrcarl@n...> wrote:
> Hi all...
>
> I have a motor rated at 5V at 4A and my power suply is 12V at
12.5A. Ohms l=
> aw says I
> need a 1.75 ohm power resitor. Problem is that I can only find 1.5
and 2 o=
> hms.
> In your experience, can a good quality motor take a little more
than it's
> rated voltage? In other words, am I better off going with a little
less
> resistor and passing a little more current or should I go with a a
little =
> more
> resistor and pass a little less current?
>
> Thanks...Ross
>
>
>
>
>
>
>
>
>
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