fairly OT, but y'all may be able to help me :) - test-drb@ccmp.vtda.org

21 Apr 2001

From: Geoff Reed &lt;geoffr(a)zipcon.net&gt;

...
 I need to test a device that uses sensors that send
back a signal using a
...
 0-20MA current. anyone know of a source of a schematic
to make something to
...
 generate such in 1 ma increnemts?  or have any tips???

Are you sure that those are not 4-20ma sensors?  if so that is an
industrial standard for remote analog sensors and there are devices that
will translate the 4-20ma to a digital
(even scaled if needed) signal either parallel or serial interfaced.

Allison