Return-Path: Received: (qmail 14842 invoked from network); 7 Nov 2001 15:50:11 -0000 Received: from unknown (HELO warrior.services.quay.plus.net) (212.159.14.227) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 7 Nov 2001 15:50:11 -0000 Received: (qmail 16336 invoked from network); 7 Nov 2001 15:50:13 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by warrior.services.quay.plus.net with SMTP; 7 Nov 2001 15:50:13 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 161Usj-0000cd-00 for rsgb_lf_group-outgoing@blacksheep.org; Wed, 07 Nov 2001 15:44:49 +0000 Received: from tomts5.bellnexxia.net ([209.226.175.25] helo=tomts5-srv.bellnexxia.net) by post.thorcom.com with esmtp (Exim 3.33 #2) id 161Use-0000cW-00 for rsgb_lf_group@blacksheep.org; Wed, 07 Nov 2001 15:44:48 +0000 Received: from server1 ([216.209.138.29]) by tomts5-srv.bellnexxia.net (InterMail vM.4.01.03.16 201-229-121-116-20010115) with SMTP id <20011107154326.XFNE7882.tomts5-srv.bellnexxia.net@server1> for ; Wed, 7 Nov 2001 10:43:26 -0500 Message-ID: <001e01c167a2$ecd59df0$0a00a8c0@ThreeLakes.ca> From: "Larry Kayser" To: rsgb_lf_group@blacksheep.org References: <000001c166ee$395054a0$144d01d5@default> Subject: LF: Re: Ringing Voltage on Telephone, boo-boo Date: Wed, 7 Nov 2001 10:43:16 -0500 MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4133.2400 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Oh My, another mistake in my dotage. Yes, several are correct the ringing induction has a component of 20 Hz, but it is a 20 Hz cycle of 1000 Hz that you get. There are a lot of reasons for this, but the critical; notion is that the ringing voltage peak is from the 120V Central Office battery, 120V and is AC at the 1.414 peak. If you want put a scope on the ringing induction and take a look. when you put a .1 mfd cap in series with the line and rectify the ringing induction, you are working on the 1000 Hz component, not the 20 Hz component hi. The 1000 Hz component is what you hear when your listening on the line, the 20 Hz component makes the old mecanical bells jump hi. The 20 Hz component can also come in a number of variants. Sorry I messed this up, very few understand how the ringing induction system works, and i must put myself in the class of no longer having it down pat.... Larry VA3LK