Article View: sci.electronics
Article #15173Old phone
From: Paula Stockholm
Date: Fri, 20 Nov 1992 01:37
Date: Fri, 20 Nov 1992 01:37
54 lines
2372 bytes
2372 bytes
In article <722202917snx@nlbbs.UUCP> paula@nlbbs.UUCP writes: > > > In article <1648@airgun.wg.waii.com> miller@hmsp04.wg3.waii.com writes: > > > > > I have an old telephone (circa 1963, from the dates stamped inside) that > works > > > > Surely the wiring has changed since then - I understand that there used to > be > > 3 wires/line and now there's 2 wires/line. Maybe with a little redirection > > of the internal wiring I can get the ringer to work? > > > > Griff, > > You're on the right track - Tip and Ring (red & green) are the > "active" wires in phone lines. Used to be that Sleeve (yellow) > was the ground. > > Older phones sometimes were wired with the bell connected from > Tip-Sleeve or Ring-Sleeve or, on private lines, Tip-Ring. > > You may find that the red and green wires from the phone cord go > to L1 and L2 in your old phone. To work nowdays, there should be > a wire to the bell connected to each of these. If not, look at > where the cord's yellow wire connects. Move the bell connection > from there to the lonesome red or green connection. > > Also there are two other wires from the bell. These should > connect to K and A on the transformer thing (where L1&L2 are). > A capacitor should also be connected to K and A. > > Like this: > > RED L2 ---/\/\/\-- K --||-- A --/\/\/\/\---- L1 GREEN > 1/2 Bell CAP 1/2 Bell > Coil Coil > > * * * * * * * * * * * * * * * * * * * * * * * * * * * * * > * Paula Stockholm paula@nlbbs.UUCP * > * Cumberland, Maine !nlbbs!paula@uunet.uu.net * > * * * * * * * * * * * * * * * * * * * * * * * * * * * * > > > > > > > > > > >
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Path: arc1-ca.pugleaf.net!sparky!uunet!gator!nlbbs!uupms!paula From: paula@nlbbs.UUCP (Paula Stockholm) Newsgroups: sci.electronics Subject: Old phone Message-ID: <722223467snx@nlbbs.UUCP> Date: Fri, 20 Nov 92 01:37:47 GMT References: <722202917snx@nlbbs.UUCP> Reply-To: paula@nlbbs.UUCP Distribution: world Organization: The Electronics Workbench Lines: 54