X-GM-THRID: 1213251548138213264 X-Gmail-Labels: rsgb lf X-Gmail-Received: c5e9500f8be36997c77942c33e0562b6fe97ad12 Delivered-To: daveyxm@gmail.com Received: by 10.64.249.16 with SMTP id w16cs170632qbh; Thu, 31 Aug 2006 10:54:01 -0700 (PDT) Received: by 10.49.41.12 with SMTP id t12mr1752540nfj; Thu, 31 Aug 2006 10:54:00 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mx.gmail.com with ESMTP id c10si2048416nfb.2006.08.31.10.53.59; Thu, 31 Aug 2006 10:54:00 -0700 (PDT) Received-SPF: neutral (gmail.com: 193.82.116.20 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1GIqbi-0006jE-Mn for rs_out_1@blacksheep.org; Thu, 31 Aug 2006 18:45:38 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1GIqbi-0006j5-Bl for rsgb_lf_group@blacksheep.org; Thu, 31 Aug 2006 18:45:38 +0100 Received: from yk-mlwprd2.northwestel.ca ([198.235.201.13] helo=mail2.theedge.ca) by relay1.thorcom.net with esmtp (Exim 4.62) (envelope-from ) id 1GIqbe-0001QB-DK for rsgb_lf_group@blacksheep.org; Thu, 31 Aug 2006 18:45:38 +0100 Received: from eagles (whthyt235-40.northwestel.net [207.189.235.40]) by mail2.theedge.ca (Spam Firewall) with SMTP id BCAC779907 for ; Thu, 31 Aug 2006 11:53:08 -0600 (MDT) Message-ID: <000301c6cd25$289ed620$6501a8c0@eagles> From: "J. Allen" To: "LF \(RSGB\)" Date: Thu, 31 Aug 2006 17:44:50 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.2869 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.2962 X-Virus-Scanned: by Barracuda Spam Firewall at theedge.ca X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,AWL=-0.022,FORGED_RCVD_HELO=0.05 Subject: LF: Why? Content-Type: text/plain; format=flowed; charset="iso-8859-1"; 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=0.0 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 Status: O X-Status: X-Keywords: X-UID: 4368 Thinkers, What are the reasons for not bypassing the center tap on the push-pull amps apart from high bypass current? There are spikes on the rising edge near the positive and negative peaks in the waveform of the output from the LPF from the amp I am working on, and bypassing the center tap to ground cleared up the spikes. It also cleared up the bypass capacitor :o). J.