Return-Path: Received: from rly-db02.mx.aol.com (rly-db02.mail.aol.com [172.19.130.77]) by air-db07.mail.aol.com (v121.4) with ESMTP id MAILINDB071-ab147d1d44432a; Fri, 07 Mar 2008 18:48:33 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-db02.mx.aol.com (v121.4) with ESMTP id MAILRELAYINDB027-ab147d1d44432a; Fri, 07 Mar 2008 18:48:25 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1JXmIL-00063w-NZ for rs_out_1@blacksheep.org; Fri, 07 Mar 2008 23:48:09 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1JXmIL-00063n-7p for rsgb_lf_group@blacksheep.org; Fri, 07 Mar 2008 23:48:09 +0000 Received: from simone.ucs.mun.ca ([134.153.232.77]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1JXmII-0002r4-6U for rsgb_lf_group@blacksheep.org; Fri, 07 Mar 2008 23:48:09 +0000 Received: from plato.ucs.mun.ca (plato.ucs.mun.ca [134.153.232.153]) by simone.ucs.mun.ca (8.13.1/8.13.1) with ESMTP id m27Nld26002913 for ; Fri, 7 Mar 2008 20:17:39 -0330 Date: Fri, 7 Mar 2008 20:17:38 -0330 (NST) From: jcraig@mun.ca X-X-Sender: jcraig@plato.ucs.mun.ca To: rsgb_lf_group@blacksheep.org In-Reply-To: <00d001c8809a$71f10940$0900a8c0@Lark> Message-ID: References: <47D1A6FF.1080803@telia.com> <00d001c8809a$71f10940$0900a8c0@Lark> MIME-Version: 1.0 X-Spam-Score: 0.6 (/) X-Spam-Report: autolearn=disabled,NO_REAL_NAME=0.55 Subject: Re: LF: Re: Smaller DC feeding choke in class E amplifier Content-Type: TEXT/PLAIN; charset=US-ASCII; format=flowed X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=NO_REAL_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-IP: 193.82.116.20 X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_helo : n X-AOL-SCOLL-AUTHENTICATION: listenair ; SPF_822_from : n X-Mailer: Unknown (No Version) Alan, Johan and group, Since experimenting on LF I have discovered the joys of Class E, many thanks to Alan. My first 100W TX used an IRF-640 as suggested on Alan's web page. A dozen of them could be had for about $10 in 2003. Unfortunately, they are have gone up quite a bit since then, although much cheaper than a 6146! There seems to be a new generation of hexfet such as the IRFP260 and perhaps it might be possible to use this in a 12volt 100w amp. Unfortunately, many 640's came to an untimely demise in my unsuccessful attempts to get 100 watts with a 12 V supply. 73 Joe VO1NA