Re: [CAD_CAM_EDM_DRO] Re: Question for Mariss

----- Original Message -----
From: <JanRwl@...>
To: <CAD_CAM_EDM_DRO@yahoogroups.com>
Sent: Sunday, May 19, 2002 1:47 AM
Subject: Re: [CAD_CAM_EDM_DRO] Re: Question for Mariss


> In a message dated 18-May-02 23:28:43 Central Daylight Time,
> scott@... writes:
>
>
> > I used some opto22 modules (ODC5) for this. They are very inexpensive
(~$9
> > USD) and work great.
>
> WOW, some folks throw $ at their sources like it was toxic! A ULN-2003
has
> SEVEN "current-sinking" Darlingtons with "TTL-in", and up to 500 mA sink,
per
> O.C. output (of which there are seven, incl. EMI bucking diodes). That
is
> in a 16-pin DIP plastic package, and they cost about a buck each,
depending
> on what vendor, where.
>
> The Step and Direction inputs can be fed from 74HC02 IC's with NO problem!
>
> Take care! Newbie naivty is not always particularly healthy for GOOD
> expensive electronic units (Geckos, etc.)! Jan Rowland, Old Troll
>
>
> [Non-text portions of this message have been removed]
>
>
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