Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-mc04.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7371E38000159; Wed, 6 Jul 2011 14:40:24 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1QeX08-0000EE-UA for rs_out_1@blacksheep.org; Wed, 06 Jul 2011 19:39:08 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1QeX08-0000E5-6y for rsgb_lf_group@blacksheep.org; Wed, 06 Jul 2011 19:39:08 +0100 Received: from nm1.bt.bullet.mail.ird.yahoo.com ([212.82.108.232]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1QeX07-0000lp-4q for rsgb_lf_group@blacksheep.org; Wed, 06 Jul 2011 19:39:08 +0100 Received: from [212.82.108.231] by nm1.bt.bullet.mail.ird.yahoo.com with NNFMP; 06 Jul 2011 18:39:01 -0000 Received: from [212.82.108.226] by tm4.bt.bullet.mail.ird.yahoo.com with NNFMP; 06 Jul 2011 18:39:01 -0000 Received: from [127.0.0.1] by omp1003.bt.mail.ird.yahoo.com with NNFMP; 06 Jul 2011 18:39:01 -0000 X-Yahoo-Newman-Id: 328605.75325.bm@omp1003.bt.mail.ird.yahoo.com Received: (qmail 63214 invoked from network); 6 Jul 2011 18:39:00 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btopenworld.com; h=DKIM-Signature:Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MIMEOLE; b=kImbY/7MkV9SLsUqI+ItID69Zh9KckVcoRJNPhnSMqpTsS7L4Xiwf7mmfmJVFG5HmxkayoMprrTs7ERhsneTie8Lw2jwSCs3dl+jUSjw612MF48aDZZx0SqEJnGk2r4kfs/VuVv9EiOUFPWAY5a+bddQ02F6BVH7u7Ik7ncI99w= ; DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=btopenworld.com; s=s1024; t=1309977540; bh=XxV4XEDu59FQxHrMNWElJIDqONZIL9JeEowRA+VWEo8=; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:In-Reply-To:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MIMEOLE; b=rIM7PXgcmIfjeUFb4b72mIanASZg89fHqcqDPC28ft8WdF2eNGP9OIIGaKL2dTA/oqRBd/PaKikbbhS+9vimP4TQpfrTMuxAUQgVyY8iw1X+UE+TCuyXW2yMwidGb2Nj1XBIk2C7KtYsHikxfsrXfiQB3+FkDjioaBGhSGiE2kY= Received: from JimPC (james.moritz@86.135.149.244 with login) by smtp822.mail.ukl.yahoo.com with SMTP; 06 Jul 2011 18:39:00 +0000 GMT X-Yahoo-SMTP: Cxhli3eswBD1ozmtAojhjrja86kWx0Qm9tycD5QR1DKWrOLgjJcXkw-- X-YMail-OSG: sXngVC8VM1mxPjf25c.ZUQuX2Bn9i4iSyRSTZj8p10nuIYk U86aIIWoeNothaoU5v4lFkS4OCqX_R6mFcG.IpVPn7a8LDcrYnbtYDgWF1rb hmrgwc.sKBsopW9tIRY_7DZk9n50KnfuQN_rcE2FFgw_6NygRs8_B6PDiaIX 2aM1Zl8Qmj6PNZNvrhxB2V8Pz6MyVyTKK6Is_yU5Qdmc8U0mOqf1oIDty7v_ QClfiosv.0NJauMI9JuJmEjEYV4PapgNo54KTUXX6Itsd.fHp70SfNihChk7 b2DphBsw.QMWluCXsRMFjgbZUCadSexubPL1xy.2yJm__nMQUfy1wZA0BmTm JHH.qapG0NGSktaSsM5Oig9ZKGsxZ7x6ijgxffp3NfogDUjZ2wMtfQow3rIj 6lC8JhHWu8jVPxkUtshh_7Mo- X-Yahoo-Newman-Property: ymail-3 Message-ID: <2B86184B69A4433C95C515D7D2F72BBA@JimPC> From: "James Moritz" To: References: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr> In-Reply-To: <516CAAC2-5EF6-456A-80E9-A4697777371E@numeo.fr> Date: Wed, 6 Jul 2011 19:39:37 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MIMEOLE: Produced By Microsoft MimeOLE V6.0.6002.18463 DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,UNPARSEABLE_RELAY=0.001 Subject: LF: Re: Circuit Analysis Programs Content-Type: text/plain; format=flowed; charset="Windows-1252"; reply-type=original 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=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME 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-global-disposition: G X-AOL-SCOLL-SCORE: 0:2:444958336:93952408 X-AOL-SCOLL-URL_COUNT: 0 X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-d025.2 ; domain : btopenworld.com DKIM : fail x-aol-sid: 3039ac1d604c4e14ac187883 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none Dear John, LF Group, If you are trying to simulate the impedance of a circuit versus frequency, as opposed to designing a matching network, you could use one of the Spice circuit simulators to do an "AC analysis". I have been using LTspice quite a bit lately, which is a free download from Linear Technology http://www.linear.com/designtools/software/ . It is easier to use than many spice simulators, and has a very wide range of application. Cheers, Jim Moritz 73 de M0BMU