I knew tht, just a temporay slip...

-----Original Message-----
From: John Woodgate [mailto:j...@jmwa.demon.co.uk]
Sent: Friday, November 01, 2002 11:40 AM
To: emc-p...@majordomo.ieee.org
Subject: Re: Shield Room Lighting



I read in !emc-pstc that POWELL, DOUG <doug.pow...@aei.com> wrote (in
<B44016F6854CD511A6470003476B45E438267D@FTCEXC01>) about 'Shield Room
Lighting' on Thu, 31 Oct 2002:
>Coupled with this, tungsten experiences a fairly high in-rush
>current owing to it's very dynamic negative temperature coefficient.

Positive, not negative. And it's not all that 'dynamic'. It's the very
high 'hot' temperature that makes the change in resistance very large.
-- 
Regards, John Woodgate, OOO - Own Opinions Only. http://www.jmwa.demon.co.uk

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