Return-Path: Received: (qmail 27440 invoked from network); 23 Feb 1999 00:19:04 -0000 Received: from magnet.plus.net.uk (HELO magnet.force9.net) (195.166.128.26) by medusa.plus.net.uk with SMTP; 23 Feb 1999 00:19:04 -0000 Received: (qmail 5222 invoked from network); 23 Feb 1999 00:20:01 -0000 Received: from post.thorcom.com (194.75.130.70) by magnet.plus.net.uk with SMTP; 23 Feb 1999 00:20:01 -0000 Received: from troy.blacksheep.org ([194.75.183.50] ident=root) by post.thorcom.com with esmtp (Exim 2.04 #3) id 10F5ag-0007o5-01; Tue, 23 Feb 1999 00:20:46 +0000 Received: (from root@localhost) by troy.blacksheep.org (8.6.12/8.6.12) id AAA07169 for rsgb_lf_group-outgoing; Tue, 23 Feb 1999 00:16:51 GMT X-Priority: 3 X-MSMail-Priority: Normal Received: from post.thorcom.com (root@post.unica.co.uk [194.75.183.70]) by troy.blacksheep.org (8.6.12/8.6.12) with ESMTP id AAA07016 for ; Tue, 23 Feb 1999 00:08:27 GMT Received: from nms.rz.uni-kiel.de ([134.245.1.2]) by post.thorcom.com with smtp (Exim 2.04 #3) id 10F5SO-0006ua-00 for rsgb_lf_group@blacksheep.org; Tue, 23 Feb 1999 00:12:12 +0000 Received: from mail.uni-kiel.d400.de (actually srv1.mail.uni-kiel.de) by nms.rz.uni-kiel.de with Local-SMTP (PP); Tue, 23 Feb 1999 01:08:12 +0100 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 Received: from nephro.uni-kiel.de by mail.uni-kiel.d400.de (SMI-8.6/SMI-SVR4) id BAA10962; Tue, 23 Feb 1999 01:08:10 +0100 Message-ID: <36D1F17D.7CC09125@nephro.uni-kiel.de> Date: Tue, 23 Feb 1999 01:08:29 +0100 From: "Peter W. Schnoor" Organization: University of Kiel, Clinic of Nephrology X-Mailer: Mozilla 4.05 [en] (X11; I; Linux 2.0.33 i586) To: rsgb_lf_group@blacksheep.org Subject: LF: Class-E Amplifier... MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org Hello Group, I found some articles -including the QST articles- about class-E power amplifiers there (PDF): http://www.its.caltech.edu/~mmic/reshpubindex/papers/P-index.htm A description of the 300/500 Watts PA (IRFP440/450, efficiency >90%) for 7 MHz: http://www.its.caltech.edu/~mmic/reshpubindex/class-e/poweramp.htm 54°16'N / 10°04'E, JO54ag 73 es gl de Peter, DF3LP