PSN-L Email List Message

Subject: Re: A Sticky Question
From: "Geoffrey" gmvoeth@...........
Date: Wed, 21 Jul 2010 17:32:37 -0700


Interesting, I have never heard of 50AWG wire
unless that was what they used in pairs for
the expendable bathy thermograph probe
I used to drop in the middle of the Pacific Ocean.
Very fine hair like wire was wound on a spool
in lengths of like 2000 feet or so to connect the
temperature recorder to a probe.
You drop the probe in the ocean never to be seen again.
I had never seen such fine wire before,
it makes me think of wire guided missles.
I have read that the cross section of copper is more
important than the number of turns.
Also semiconductors are current devices and not voltage devices
so you should be able to get one to work with
only a couple turns of heavy wire.
I just cant imagine how they make a 50AWG B&S wire.

300 million years from now some new specie of intelligent
life will find fossil products of technology I dumped in the ocean so long ago.
But there wont be any fossil or nuclear fuels left for them to use.
Just our old technology remnants to find.

???? OK! , It may be a delusion ??????

Best Regards,
geoff

----- Original Message ----- 
From: "Jan Froom" 
To: 
Sent: Wednesday, July 21, 2010 9:40 AM
Subject: A Sticky Question


> When I wound my coils using AWG 50 gauge wire (.001") the wire is really 
> too small to see with the naked eye...
> so I had to use several bright lights so I could see reflections off the 
> wire.
> I used an old tape recorder drive motor... I put it on a rheostat so I 
> could ramp up the speed. 
> 
> With a wire that fine once you start... there was no stopping until you 
> were done... any jerking, or
> restarting always resulted in the wire breaking. 
> And there was no repair... just heating the wire was enough to make it 
> brittle and it would snap just bending it.
> 
> The other bad part of using that size wire... was that you never knew if 
> the initial connection, at the beginning of
> the wind, was any good until you were done... and could check for 
> continuity.
> 
> But you could sure get a lot of turns on a little one inch in diameter 
> spool.
> 
> Jan in Gilroy
> 
> Chris... if you're reading any of this... We're glad to hear you are 
> getting better and we're all looking forward to your return.
> We miss your help and insight to the whys and what's of this hobby.
> 
> 
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