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Article #6445

Phone in use light - help!?

#6445
From: Howard Feiges
Date: Sun, 16 Aug 1992 21:55
25 lines
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Hello there feiges here

Ive moved into my new apartment and I now have 5 phones throughout
My roomates pick up on my conversations and modem.  I need a simple little 'in
use' light or LED device. help?!

Ive noticed that when I place a 1.5 volt LED (it gets a little warm)
in series with the phone line, when a phone is picked up the circuit
is completed and the LED lights.  

Is this bad?  How will the LED affect the phones throughout the house,
or the modem even?  Should I put 5 of them in series or parallel?  Should
I scrap this plan and build some other device?
What to do?

please mail me responces to the following addresses (mail to both if you can
becauese one address may be deleted this week, I am not sure)


feiges@jomby.cs.wisc.edu
and
feiges@cae.wisc.edu

thanks tons
tpk
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Message-ID: <1992Aug16.215545.8345@cs.wisc.edu>
Path: arc1-ca.pugleaf.net!sparky!uunet!sun-barr!rutgers!uwvax!jomby.cs.wisc.edu!feiges

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Path: arc1-ca.pugleaf.net!sparky!uunet!sun-barr!rutgers!uwvax!jomby.cs.wisc.edu!feiges
From: feiges@jomby.cs.wisc.edu (Howard Feiges)
Newsgroups: sci.electronics
Subject: Phone in use light - help!?
Message-ID: <1992Aug16.215545.8345@cs.wisc.edu>
Date: 16 Aug 92 21:55:45 GMT
Sender: news@cs.wisc.edu (The News)
Organization: University of Wisconsin, Madison -- Computer Sciences Dept.
Lines: 25