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- Path: 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
-
-
- 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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