Re: [CAD_CAM_EDM_DRO] faster steppers was Re: Going home

Hi Ballendo,

> The 297/298 chip combo can handle 40V max! Get nearer to it, but
> NEVER exceed it! The 298 WILL fry!
>
> Any way, a 24V xfrmr will be about 34vdc when rectified and filtered.
> This is the first step to more speed (assuming you NEED the 1mm lead
> on the screw).

Thanks. This is just the set-up I'm using. I may have the motors running a
bit lean on current at the moment (they only just get warm) but I don't
think this would affect their top speed would it?
The 1mm screw is to try to give me enough resolution for making the watch
parts with a basic, half-step driver. Perhaps when I've proved the theories
and saved up a bit more, machine No.2 can have faster screws and
microstepping drivers. At the moment I'm on a VERY tight budget - hence all
the effort in making this thing out of stuff salvaged from the scrap yard!

Ian
--
Ian W. Wright
Sheffield UK
www.iw63.freeserve.co.uk