Re: [CAD_CAM_EDM_DRO] Re: Opto / relay recommendation

On Fri, 31 May 2002 22:25:35 -0000, you wrote:

>So if I'm wiring up one of these anyway, is it worth putting all of
>the parallel port I/O pins that I'm using through a ULN2003 ?

No.

>Would
>it be ok handling step/direction signals ? Is there a practical limit
>to the frequency of step/direction signals it can handle ?
>Would it help to protect the parallel port on the computer ?

Read the data sheet at

http://www.allegromicro.com/datafile/2001.pdf

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