🚀 go-pugleaf

RetroBBS NetNews Server

Inspired by RockSolid Light RIP Retro Guy

Article View: sci.electronics
Article #15173

Old phone

#15173
From: Paula Stockholm
Date: Fri, 20 Nov 1992 01:37
54 lines
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  *
 >         * * *  * * * * * * * * * * * * * * * * * * * * * * * * *
 >                        
 > 
 > 
 > 
 > 
 > 
 > 
 > 
 > 
 > 
 > 
Technical Details
Message-ID: <722223467snx@nlbbs.UUCP>
Path: arc1-ca.pugleaf.net!sparky!uunet!gator!nlbbs!uupms!paula
References: <722202917snx@nlbbs.UUCP>

Show Full Headers
Complete Article Headers
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