Re: [CAD_CAM_EDM_DRO] Re: Re : motor woes

On Mon, 18 Mar 2002 05:08:10 -0000, you wrote:

>L297/L298's is a good setup but their rated for 2Amps but I don't
>particularly like running electronics at their max rating as you
>would need to with the 103H7123-0410's.

I may not use those, if I go the bipolar route. I'll have a look
tonight at what motors are available and more importantly - at what
price!

> Some people use 1 L297
>driving 2 L298's in parallel and derate them at 3 Amps. I think some
>of the people in this group make and sell Drives based on these ICs.

That's an interesting concept! I haven't studied the data sheets yet,
but just had a quick look - I may need to ask questions on that one.

>Buying might save you some headaches over building. Not to mention
>the time saved.

The time isn't a problem, I like building :)

>Another option you might want to consider is the Gecko Drive...
>http://www.geckodrive.com/
>
>Is is a microstepper Drive and many on this group use them. Also Tim
>has some of the original 201's left at a discounted price, I just
>bought 3 from him for my project. (Tim, I'm the one with the great
>postal service ;) ) Their rated up to 80vdc and 7 amps, this ought
>give you plenty of options motor and power supply wise.
>http://www.timgoldstein.com/CNC/g201special.asp

Unfortunately - they are all expensive this side of the pond, and
importing gets me stuck with +20% duty + 17% VAT!!!


Steve Blackmore
--
Pilot Consultancy Limited ***** Computer Consultants
Telephone 01744 752256 Mobile 07831 768478
Email: steve@... WWW: http://www.pilotltd.net