Re: over voltage power supply with low voltage servo motors ?

I need 9 volts or 9.6 volts and have 2 switching power supplies.

for the servo, the transformers, caps and such will be close to $100,
but a switcher from MPJA is only $29.00 plus a post PS capacitor to
handle the back EMF.

I do wish I had a simple transformer version....

um... I do have a variac that I could test with. Not as familiar with
those in application. should I use it directly to get the voltage,
or power a second stepdown transformer to get the voltage ?

Not enough current to use to run, but enough to test each part
individually.


Dave

--- In CAD_CAM_EDM_DRO@yahoogroups.com, KM6VV <KM6VV@a...> wrote:
> Dave,
>
> Why not just use a VARIAC and a 12 - 24V XFMR LINEAR supply? That's
what I did
> this weekend to bring up a new board.
>
> Alan KM6VV
>
> turbulatordude wrote:
> > Hi all,
> >
> > I have two problems.
> >
> > #1 is that I need 9 volts to power a small motor on an e-bay special.
> > 9 volts and 10 amps max.
> >
> > I was thinking one of those hobby motor speed controls.
> >
> > Second, how silly is it to run a 24 volt servo on a 35 volts power
> > supply ?
> >
> > can I just limit the top speed to, say, 65% so the voltage is
limited ?
> >
> > Dave
> >