Return-Path: Received: from rly-mg04.mx.aol.com (rly-mg04.mail.aol.com [172.20.83.110]) by air-mg01.mail.aol.com (v121_r4.4) with ESMTP id MAILINMG013-a07491a1e6a1f2; Tue, 11 Nov 2008 19:08:26 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mg04.mx.aol.com (v121_r4.4) with ESMTP id MAILRELAYINMG041-a07491a1e6a1f2; Tue, 11 Nov 2008 19:08:13 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1L03HF-0008JU-2a for rs_out_1@blacksheep.org; Wed, 12 Nov 2008 00:08:09 +0000 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1L03HE-0008JL-Nd for rsgb_lf_group@blacksheep.org; Wed, 12 Nov 2008 00:08:08 +0000 Received: from ams-iport-1.cisco.com ([144.254.224.140]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1L03HE-0001ic-1B for rsgb_lf_group@blacksheep.org; Wed, 12 Nov 2008 00:08:08 +0000 X-IronPort-AV: E=Sophos;i="4.33,586,1220227200"; d="scan'208";a="25332120" Received: from ams-dkim-1.cisco.com ([144.254.224.138]) by ams-iport-1.cisco.com with ESMTP; 12 Nov 2008 00:07:55 +0000 Received: from ams-core-1.cisco.com (ams-core-1.cisco.com [144.254.224.150]) by ams-dkim-1.cisco.com (8.12.11/8.12.11) with ESMTP id mAC07tYD017016; Wed, 12 Nov 2008 01:07:55 +0100 Received: from stewart-bryants-computer.local (ams3-vpn-dhcp1960.cisco.com [10.61.71.168]) by ams-core-1.cisco.com (8.13.8/8.13.8) with ESMTP id mAC07sZg021511; Wed, 12 Nov 2008 00:07:54 GMT Message-ID: <491A1E5A.6010205@g3ysx.org.uk> Date: Wed, 12 Nov 2008 00:07:54 +0000 From: Stewart Bryant User-Agent: Thunderbird 2.0.0.16 (Macintosh/20080707) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <010201c9441d$6832f480$0301a8c0@mal769a60aa920> <4919ED04.3050202@yahoo.com> <491A153D.1010503@ukonline.co.uk> In-Reply-To: <491A153D.1010503@ukonline.co.uk> Authentication-Results: ams-dkim-1; header.From=stewart@g3ysx.org.uk; dkim=neutral X-Karma: 0: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: Admittance Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Peter Dodd wrote: > Does anyone know of a program to convert Admittance to Impedance. The > Smith Chart works fine but a computer program might be quicker and more > accurate. > > Many thanks > > Peter, G3LDO > > > Peter Some version of excel know about complex numbers, and have the function imdiv (imaginary divide) Stewart/G3YSX