PDP-8 case - test-drb@ccmp.vtda.org

19 Nov 2001

On Nov 19, 18:35, Richard Erlacher wrote:
...
  From: "Greg Ewing"
&lt;greg(a)cosc.canterbury.ac.nz&gt; 
...
  > I think so-called "conductive" foam
actually has quite
 > a high resistance. If that's so, it would be unlikely
 > to upset any ordinary logic circuit. 
...
  ISTR something about megohms per linear inch...
 I doubt that will bother PDP-8 circuits much. 
Resistivity is normally measured "per square" (if it's linear, how wide
 should the strip be?)   And this stuff is about 25 megohms per square,
according to my measurements.  So, no, I don't see how it could bother 7400
TTL.

-- 
Pete						Peter Turnbull
						Network Manager
						University of York