Return-Path: Received: (qmail 12211 invoked from network); 26 May 2002 19:51:49 -0000 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 26 May 2002 19:51:49 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 27846 invoked from network); 26 May 2002 19:51:30 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from unknown (HELO post.thorcom.com) (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 26 May 2002 19:51:30 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 17C3zN-0006aJ-00 for rsgb_lf_group-outgoing@blacksheep.org; Sun, 26 May 2002 20:47:37 +0100 Received: from anchor-post-33.mail.demon.net ([194.217.242.91]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 17C3zM-0006aE-00 for rsgb_lf_group@blacksheep.org; Sun, 26 May 2002 20:47:36 +0100 Received: from telemetry.demon.co.uk ([194.222.19.114]) by anchor-post-33.mail.demon.net with smtp (Exim 3.35 #1) id 17C3zK-000B7R-0X for rsgb_lf_group@blacksheep.org; Sun, 26 May 2002 20:47:35 +0100 Message-ID: Date: Sun, 26 May 2002 20:46:26 +0100 To: rsgb_lf_group@blacksheep.org From: "Tom Boucher" Subject: Re: LF: Decca component In-reply-to: <000701c204c9$aece79e0$416368d5@oemcomputer> MIME-Version: 1.0 X-Mailer: Turnpike (32) Trial Version 3.05 Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Mike These are 'varistors' or voltage dependant resistors which are used as transient suppressors. In my 'chinese copy' of the Decca bridge PA, I used a 200 volt, 8 Kilo-amp, 85 Joule device available from Farnell P/No: 502-224. It is also a red disc and is about 25 mm diameter. 73, Tom G3OLB Mike, G3XDV wrote: > A component across one of >the transistors burnt out. I have a diagram but do not recognise the symbol >(perhaps a temperature variable resistor?). It is called R31V and the symbol >looks like a preset potentiometer, but it looks just like a red disc ceramic >capacitor.