Return-Path: Received: (qmail 11804 invoked from network); 4 Aug 2001 20:24:08 -0000 Received: from unknown (HELO murphys-inbound.services.quay.plus.net) (212.159.14.225) by excalibur-qfe1-smtp-plusnet.harl.plus.net with SMTP; 4 Aug 2001 20:24:08 -0000 Received: (qmail 12692 invoked from network); 4 Aug 2001 20:23:53 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys with SMTP; 4 Aug 2001 20:23:53 -0000 Received: from majordom by post.thorcom.com with local (Exim 3.16 #2) id 15T7o3-0008Fn-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 04 Aug 2001 21:13:55 +0100 Received: from gadolinium.btinternet.com ([194.73.73.111]) by post.thorcom.com with esmtp (Exim 3.16 #2) id 15T7o3-0008Fi-00 for rsgb_lf_group@blacksheep.org; Sat, 04 Aug 2001 21:13:55 +0100 Received: from [213.123.29.95] (helo=dave) by gadolinium.btinternet.com with smtp (Exim 3.22 #9) id 15T7nH-0007kd-00 for rsgb_lf_group@blacksheep.org; Sat, 04 Aug 2001 21:13:09 +0100 Message-ID: <000001c11d21$e314c500$5f1d7bd5@dave> From: "Dave Sergeant" To: rsgb_lf_group@blacksheep.org References: <000301c11909$03108960$5f4001d5@default> <3B6AF458.D9781B7F@alg.demon.co.uk> Subject: Re: LF: Alternative LCR meter. Date: Sat, 4 Aug 2001 18:58:56 +0100 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: Steve Rawlings wrote: >Alan G3NYK wrote: >> I spotted an ad buried in the back of Radcom by Chevet Supplies Ltd at >> Blackpool for a TENMA LCR meter [. . . . .] good value at 44 including >> vat and UK carriage. >Following Alan's comments, I decided to buy one too! >I've only just unpacked it, but initial results with the Tenma >Model 72-6634 are encouraging. I just happened to spot in today's special offer sheet from CPC (01772 654455) that they have this Tenma LCR meter on sale at UKP28.32 plus vat and carriage (free to account holders over 30pounds). Perhaps 'special offer' is misleading as their current catalogue lists it at 27.02. They also have some similar meters in their catalogue, the Tenma is the cheapest of them, and they range up to an Avo one at UKP227. All these meters have a common feature - they are not optimised for low value inductance and capacitance, even the Avo has 1nF and 1mH as its bottom full scale range. The Almost All Digital Electronics LC meter (http://www.aade.com/) is more custom designed to measuring the sort of values we are interested. It has a maximum resolution of 0.01pF and 1nH which it displays quite happily when you null out the strays! Perhaps the accuracy down that low is a bit questionable though.... 73s Dave G3YMC dsergeant@iee.org dsergeant@btinternet.com http://www.dsergeant.btinternet.co.uk