Benchtop power supply for steppers
Archiver
Posts: 46,084
--- In basicstamps@yahoogroups.com, John Walton <john@l...> wrote:
> Can anyone suggest a good bench top power supply and where to get
it? I'm
> starting to play with stepper motors, and my wall warts just aren't
cutting
> it. I'm tired of trying to find just the right one with enough
capacity for
> what I'm driving.
> I'm not allergic to spending a couple of hundred dollars, just as
long as
> it is a good one.
>
> Dual outputs? Adjustable? Anything I left out?
>
> This is kind of off topic, but I'm betting you guys are a pretty
good resource.
>
>
> Thanks,
> -John
Hi John,
you should be able to use just a transformer, rectifier and cap (big
cap) to power steppers. no need for regulated power supplies.
be careful as the cap size needs to be BIG. figure 20k uF or so.
and also when you go from AC to DC you will pick up the peaks of the
AC, not the RMS, so multiple your AC RMS value by 1.414 to determine
your DC voltage. or your ac less the drop from the diodes or
rectifier, then times 1.414.
Dave
> Can anyone suggest a good bench top power supply and where to get
it? I'm
> starting to play with stepper motors, and my wall warts just aren't
cutting
> it. I'm tired of trying to find just the right one with enough
capacity for
> what I'm driving.
> I'm not allergic to spending a couple of hundred dollars, just as
long as
> it is a good one.
>
> Dual outputs? Adjustable? Anything I left out?
>
> This is kind of off topic, but I'm betting you guys are a pretty
good resource.
>
>
> Thanks,
> -John
Hi John,
you should be able to use just a transformer, rectifier and cap (big
cap) to power steppers. no need for regulated power supplies.
be careful as the cap size needs to be BIG. figure 20k uF or so.
and also when you go from AC to DC you will pick up the peaks of the
AC, not the RMS, so multiple your AC RMS value by 1.414 to determine
your DC voltage. or your ac less the drop from the diodes or
rectifier, then times 1.414.
Dave
Comments
it and added it to the "some day when I'm smarter" pile. I do really need
a good power supply. I'm tinkering enough now that I should have one.
Thanks again,
-John
>Hi John,
>
>you should be able to use just a transformer, rectifier and cap (big
>cap) to power steppers. no need for regulated power supplies.
>
>be careful as the cap size needs to be BIG. figure 20k uF or so.
>and also when you go from AC to DC you will pick up the peaks of the
>AC, not the RMS, so multiple your AC RMS value by 1.414 to determine
>your DC voltage. or your ac less the drop from the diodes or
>rectifier, then times 1.414.
>
>Dave
>
>
>
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed. Text in the Subject and
>Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/