Return-Path: Received: (qmail 9709 invoked from network); 29 Jan 2002 16:40:48 -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; 29 Jan 2002 16:40:48 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 5278 invoked from network); 29 Jan 2002 16:40:50 -0000 Received: from unknown (HELO post.thorcom.com) (212.172.148.70) by murphys.services.quay.plus.net with SMTP; 29 Jan 2002 16:40:50 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from majordom by post.thorcom.com with local (Exim 3.33 #2) id 16VbE4-0002qN-00 for rsgb_lf_group-outgoing@blacksheep.org; Tue, 29 Jan 2002 16:35:16 +0000 Received: from e1.ny.us.ibm.com ([32.97.182.101]) by post.thorcom.com with esmtp (Exim 3.33 #2) id 16VbE2-0002qI-00 for rsgb_lf_group@blacksheep.org; Tue, 29 Jan 2002 16:35:15 +0000 Received: from northrelay01.pok.ibm.com (northrelay01.pok.ibm.com [9.117.200.21]) by e1.ny.us.ibm.com (8.9.3/8.9.3) with ESMTP id LAA330714 for ; Tue, 29 Jan 2002 11:30:20 -0500 Received: from usa.net (ss6.bld.socks.ibm.com [9.14.4.71]) by northrelay01.pok.ibm.com (8.11.1m3/NCO v5.01) with ESMTP id g0TGXH5190050 for ; Tue, 29 Jan 2002 11:33:17 -0500 Message-ID: <3C56CEB5.C52D2542@usa.net> Date: Tue, 29 Jan 2002 17:32:53 +0100 From: "Alberto di Bene" X-Mailer: Mozilla 4.79 [en] (Windows NT 5.0; U) X-Accept-Language: en MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org Subject: Re: LF: PSK31 generation References: <5.1.0.14.0.20020128115929.00ab3b90@gemini.herts.ac.uk> <5.1.0.14.0.20020129144512.02f80bf0@gemini.herts.ac.uk> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group Sender: > >cycle and the modulation is done only by varying the phase between the > >totem pole drivers 0 - 180 degrees. I am not familiar with that totem pole scheme, but, isn't it dangerous to drive a totem pole with 0 degrees ? Wouldn't both the Fet (transistors, whatever) be brought in conduction state at the same time ? Or is there a current limiting device ? Just curious... 73 Alberto I2PHD