Tjarrt,

On Thu, 21 Nov 1996, Tjaart van der Walt wrote:

> Ben L Wirz wrote:
>
> > > Reed relays are pretty pricey - wouldn't it have been cheaper to
> > > use a couple of PNPs in saturation (only 0.3V drop)?  Of course,
> > > the relays give you advantage of complete electrical isolation...
> >
> >         The L293D H-Bridge IC can be had for $4.00 in singles and has two
> > H-Bridges that can handle 600mA each, they can also be bridged.  These
> > are reallly simple to use, there what I use in the lower current
> > configuration of my Motor Driver Kit.
> >
>
> I've used it successfully at 1A without any problems. I can't think
> of any advantage of reed relays over the 293.


        You have used the L293D or the L293 to 1 Amp?  The L293 is rated
at .6 A and the L293D is rated at 1 Amp, or they can be bridged for
double capicity.  Can I also ask where you found the L293's if thats what
you used, I haven't been able to find them in anything less then 200 min
order.


> > --
> Friendly Regards
>
> Tjaart van der Walt
>  ______________________________________________________________
> |  Another sun-deprived R&D Engineer slaving away in a dungeon |
> |WASP International GSM vehicle tracking and datacomm solutions|
> |+27-(0)11-622-8686 |  http://wasp.co.za   | tjaart@wasp.co.za |
> |______________________________________________________________|
>

Ben Wirz                For Microchip PIC Products including the Simm Stick
                        development system and the Easy PIC'n Book, as well
Wirz Electronics        as Motor Control, Polaroid Sonar Units, and more
blw2@cec.wustl.edu      Hobbyist Robotic & Electronic Supplies, visit:
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