Re: gEDA-user: Power (and other non-graphical) pins

[Peter Clifton <pcjc2@xxxxxxxxx>]

On Wed, 2009-01-14 at 10:33 +0000, Peter Clifton wrote:
> On Tue, 2009-01-13 at 20:45 -0500, Bob Paddock wrote:
> > On Tue, Jan 13, 2009 at 7:57 PM, DJ Delorie <[1]dj@xxxxxxxxxxx> wrote:
> > 
> >    > "It only has to live a couple of hours"
> > 
> >      I've made circuits like that.  Not always intentionally, though.
> > 
> >    You can buy parts from Vishay that do "rapid spontaneous disassembly"
> >    by design:
> >    "Exploding/Magic Smoke Resistors now available off-the-shelf",
> >     [2]http://blog.obscureresearch.net/epic
> 
> If you read the data-sheet, as I did, you might be amused to find this
> at the bottom:
> 
> "The products shown herein are not designed for use in medical,
> life-saving, or life-sustaining applications unless
> otherwise expressly indicated. Customers using or selling Vishay
> products not expressly indicated for use in such
> applications do so entirely at their own risk and agree to fully
> indemnify Vishay for any damages arising or resulting
> from such use or sale."
> 
> No Vishay, but you're perfectly happy for them to be used in bombs, and
> munitions etc..
> 
> They do quote airbag initiation as a typical example usage, so I'd
> imagine that would come under "life-saving" application.

The national appnote linked had similar amusing disclaimers:

"1 Life support devices or systems are devices or
  systems which (a) are intended for surgical implant
  into the body or (b) support or sustain life and whose
  failure to perform when properly used in accordance
  with instructions for use provided in the labeling can
  be reasonably expected to result in a significant injury
  to the user"

Hmm.. can't a munitions detonator "reasonably [be] expected to result in
a significant injury" if it _does_ perform properly?
(Ok, so not the "user"... or do we count the people on the receiving end
of the munitions.. "the users"). 

-- 
Peter Clifton

Electrical Engineering Division,
Engineering Department,
University of Cambridge,
9, JJ Thomson Avenue,
Cambridge
CB3 0FA

Tel: +44 (0)7729 980173 - (No signal in the lab!)



_______________________________________________
geda-user mailing list
geda-user@xxxxxxxxxxxxxx
http://www.seul.org/cgi-bin/mailman/listinfo/geda-user