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-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 James Wonnacott wrote: > Here's an interesting one:- My 'phone stopped working last Tuesday- > but my broadband connection is still up. An engineer came to look > at it on Thursday and told me that one wire in the pair was broken. > When I said that my broadband still worked he said that was > possible because it only uses one wire. this still didn't satisfy > me and I pointed out that in my experience the flow of a current > requires a complete circuit. He maintained that the broadband > connection uses only frequency...... but surely it is the frequency > of the current that flows in the circuit??????? If the wire is broken inside it's insulation then it effectivly acts as a capacitor. To AC, especially at high frequencies, a capacitor is a conductor. But to DC it's an insulator. Without 50VDC on the line phones don't work... -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2 (GNU/Linux) Comment: Using GnuPG with Thunderbird - http://enigmail.mozdev.org iD8DBQFEDHu5soRLMhsZpFcRAnZSAJ9DTlvKznSgYqRIJF/7/qbSLgLTmwCeJ+TU 1JDHBxyBx7J+nQo+5/SISMQ= =n7Pv -----END PGP SIGNATURE----- -- The Mailing List for the Devon & Cornwall LUG Mail majordomo@xxxxxxxxxxxxx with "unsubscribe list" in the message body to unsubscribe. FAQ: www.dcglug.org.uk/linux_adm/list-faq.html