Re: allegro microstepping ic

Check out the A3977 2.5 A and 35 VDC that can run a lot of motors
that would be great candidates for the driller.



--- In CAD_CAM_EDM_DRO@yahoogroups.com, "samcoinc2001"
<samcoinc2001@y...> wrote:

> As has been said here before allegro makes some nice stepping

control

> circuits. What I am wondering is this - They have a few
> microstepping controllers like this one.
> http://www.allegromicro.com/sf/3967/
> would it be possible or has anyone come across a working circuit to
> put an external h-bridge of mosfets to handle more current? And

could

> the current sensing still be used so the microstepping and current
> control still works.
>
> These are nice little ic but like the one above they handle such

low

> current.
>
> thanks
> sam