Return-Path: Received: (qmail 10862 invoked from network); 10 Aug 2002 20:47:33 -0000 Received: from marstons.services.quay.plus.net (212.159.14.223) by mailstore with SMTP; 10 Aug 2002 20:47:33 -0000 Received: (qmail 29253 invoked by uid 10001); 10 Aug 2002 20:52:34 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (193.82.116.70) by marstons.services.quay.plus.net with SMTP; 10 Aug 2002 20:52:34 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 17dep4-0007sp-00 for rsgb_lf_group-outgoing@blacksheep.org; Sat, 10 Aug 2002 23:35:02 +0100 Received: from mailout02.sul.t-online.com ([194.25.134.17]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 17dep3-0007sk-00 for rsgb_lf_group@blacksheep.org; Sat, 10 Aug 2002 23:35:01 +0100 Received: from fwd09.sul.t-online.de by mailout02.sul.t-online.com with smtp id 17dd4U-0001cd-09; Sat, 10 Aug 2002 22:42:50 +0200 Received: from (0482183881-0001@[62.224.53.57]) by fwd09.sul.t-online.com with smtp id 17dd4Q-0K3C6qC; Sat, 10 Aug 2002 22:42:46 +0200 From: "jannsen" <0482183881-0001@t-online.de> To: rsgb_lf_group@blacksheep.org References: <17chZQ-13Oc8eC@fwd05.sul.t-online.com> <5.1.0.14.0.20020808182124.00b0a1b0@gemini.herts.ac.uk> <005701c23f26$3e24c720$162565d5@oemcomputer> <17cwaH-07Lv5UC@fwd11.sul.t-online.com> <00ba01c23f35$04d85c20$da2565d5@oemcomputer> <005001c24075$634ae840$788ec9c8@local> <3D55695C.4999366C@usa.net> Subject: Re: LF: An Excel sheet to play with toroids X-Mailer: T-Online eMail 2.34 MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Date: Sat, 10 Aug 2002 22:42:46 +0200 Message-ID: <17dd4Q-0K3C6qC@fwd09.sul.t-online.com> X-Sender: 0482183881-0001@t-dialin.net Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: Alberto di Bene schrieb: > Today I found in my archived files an Excel sheet that > computes the number of turns for a given inductance > on a given core, and viceversa, made by WA1ION. > > In my opinion it contained an error, as it used the same > formula involving AL, both with ferrite toroids and > iron-powder toroids. Amidon gives two different > formulas for the two cases. I corrected it, and added > a couple of other, maybe useful, functions. > > If you want to check it, you can download it from here : > http://www.weaksignals.com/bin/tcas.xls > > Please report any errors, thanks > > 73 Alberto I2PHD > Hi Alberto, sri, but download is not possi. seems the questionmark in the line is a hint. regards Uwe/dj8wx