telephone lines

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Article #6828

#6828

From: Joseph Wetstein
Date: Tue, 15 Sep 1992 15:30

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I was wondering if anyone could help me out with some information:

I would like to build my own telephone/answering machine device
(digital electronics, for the most part), but I want to power the thing
from the phone lines. Does anyone know how I can get a nice clean 
voltage from the phone lines to power a digital device? I figured that
transformers would be necessary, but I'm not sure of the implementation.

Thanks,
Joe Wetstein

email:jpw@coe.drexel.edu

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Message-ID: <1992Sep15.153012.13377@cbis.ece.drexel.edu>

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arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!caen!zaphod.mps.ohio-state.edu!darwin.sura.net!jvnc.net!netnews.upenn.edu!netnews.noc.drexel.edu!coe.drexel.edu!minerva.ece.drexel.edu!jpw

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Path: arc1-ca.pugleaf.net!sparky!uunet!spool.mu.edu!caen!zaphod.mps.ohio-state.edu!darwin.sura.net!jvnc.net!netnews.upenn.edu!netnews.noc.drexel.edu!coe.drexel.edu!minerva.ece.drexel.edu!jpw
From: jpw@minerva.ece.drexel.edu (Joseph Wetstein)
Newsgroups: sci.electronics
Subject: telephone lines
Message-ID: <1992Sep15.153012.13377@cbis.ece.drexel.edu>
Date: 15 Sep 92 15:30:12 GMT
Sender: news@cbis.ece.drexel.edu
Distribution: usa
Organization: Drexel University, Philadelphia PA
Lines: 12