Alt-BEAM Archive
Message #12954
To: "'beam@sgiblab.sgi.com'" beam@sgiblab.sgi.com
From: Wilf Rigter wilf.rigter@powertech.bc.ca
Date: Mon, 3 Apr 2000 07:22:19 -0700
Subject: RE: Conductive Epoxy?
Hi Brien,
This particular epoxy makes it unusable as a potting compound for bicores
and microcores since the stray leakage current can easily screw up the
timing. But it may be useful as a resistive material for silk screening
sensors etc. What are the effects of temperature, moisture, pressure and
voltage on the resistance?
wilf
> -----Original Message-----
> From: TurtleTek@aol.com [SMTP:TurtleTek@aol.com]
> Sent: Sunday, April 02, 2000 5:16 PM
> To: beam@sgiblab.sgi.com
> Subject: Conductive Epoxy?
>
> Greetings List,
>
> It's been a while, I haven't been posting much but I assure you I've
> been
> ghosting. This is just about as active as I've seen the list be in some
> time...must be that Smithonian article.
>
> Anyway, on to the real deal. I've heard many BEAMers recommend
> encasing
> finished circuits in epoxy and I am planning to do so on this free-formed
> "fang-avore" circuit I just finished (yes, yet another! ;).
> I decided to pull out my multimeter and measure how resistant my epoxy
>
> was. You know, to make sure I don't pour on something that'll short the
> whole
> thing out. Well, It doesn't really conduct...but it doesn't provide much
> resistance either. It was at about .78 Mohms.
> How did I test that? I took two metal leads, stuck one end of each in
> a
> blob of the epoxy, let it dry, and measured the resistance between the two
>
> leads. The leads were about 3 mm away from touching.
>
> So, is that not enough resistance? Or can I pour it on? Thanks.
>
> Brien the TurtleTek
> www.extremesc.com/turtletek/beam
>
>
12955 Mon, 03 Apr 2000 08:21:40 -0600 Re: Newbie :) beam@sgiblab.sgi.com Flaming Headphones Seeing how your other questions have been answered well, I'll skip to the
un-answered one!
>3rd - about 4 years ago there was a fellow from Calgary who did a show on
>@Discovery.ca, does any one know who this fellow is, and how to contact
>him? I spoke with him once all those years ago, and he said there was a
>source in Calgary for solar cells and parts..
That would be Dave Hrynkiw, owner of Solarbotics in Calgary. That's the
same way I got started in BEAM, by watching @discovery.ca. Recorded it but
could never find the tape on how to freeform.... Don't need it now, though!
Go lots of help here! :-)
Mike
ICQ: 17940917
E-mail: headphones99@iname.com
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