Return-Path: Received: (qmail 43982 invoked from network); 1 Mar 2005 11:05:50 -0000 Received: from unknown (HELO ptb-spamcore02.plus.net) (192.168.71.3) by ptb-mailstore04.plus.net with SMTP; 1 Mar 2005 11:05:50 -0000 Received: from mailnull by ptb-spamcore02.plus.net with spamcore-l-b (Exim 4.32; FreeBSD) id 1D65E2-0005n6-K7 for dave@picks.force9.co.uk; Tue, 01 Mar 2005 11:07:39 +0000 Received: from [192.168.67.3] (helo=ptb-mxcore03.plus.net) by ptb-spamcore02.plus.net with esmtp (Exim 4.32; FreeBSD) id 1D65E0-0005ly-R1 for dave@picks.force9.co.uk; Tue, 01 Mar 2005 11:07:37 +0000 Received: from post.thorcom.com ([193.82.116.20]) by ptb-mxcore03.plus.net with esmtp (Exim) id 1D65Dy-0003ha-7f for dave@picks.force9.co.uk; Tue, 01 Mar 2005 11:07:34 +0000 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1D65BL-0007B2-KD for rs_out_1@blacksheep.org; Tue, 01 Mar 2005 11:04:51 +0000 Received: from [193.82.116.30] (helo=relay.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1D65BL-0007Ap-49 for rsgb_lf_group@blacksheep.org; Tue, 01 Mar 2005 11:04:51 +0000 Received: from smtp801.mail.ukl.yahoo.com ([217.12.12.138]) by relay.thorcom.net with smtp (Exim 4.43) id 1D65BJ-0003kr-Nx for rsgb_lf_group@blacksheep.org; Tue, 01 Mar 2005 11:04:51 +0000 Received: from unknown (HELO Main) (Alan.Melia@213.122.25.33 with login) by smtp801.mail.ukl.yahoo.com with SMTP; 1 Mar 2005 11:04:43 -0000 Message-ID: <002d01c51e4e$73389ea0$6507a8c0@Main> From: "Alan Melia" To: rsgb_lf_group@blacksheep.org References: <003e01c51e2b$0f93d220$0201a8c0@private.network> <001c01c51e4c$569cedc0$6507a8c0@Main> <000701c51e4d$a0b41a40$0201a8c0@private.network> Date: Tue, 1 Mar 2005 11:04:30 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 5.50.4522.1200 X-MimeOLE: Produced By Microsoft MimeOLE V5.50.4522.1200 X-SPF-Result: relay.thorcom.net: 217.12.12.138 is neither permitted nor denied by domain of btinternet.com X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=failed,none Subject: LF: Re: Re: Re: ... --- ... Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.1 required=5.0 tests=MAILTO_TO_SPAM_ADDR 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-Spam-Filtered: by PlusNet SpamCORE (v3.00) Hi Scott, there is one advantage that toroids could bring you could put three amps together....I think with Wilkinsons you really need a tree so its powers of two....I am sure i have seen something different somewhere. From memory, one of the toroidal circuits on my page looks a bit like a "ring" with the last leg couple back to the first. I think this can be configured to suit the number of ports available. Cheers de Alan ----- Original Message ----- From: "Scott Tilley" To: Sent: 01 March 2005 10:58 Subject: LF: Re: Re: ... --- ... > Hey Alan > > We got the bugs out... Once I found the problem with the lack of sinc in > the 4013 divider stages things have been working as expected. I thought > about the inductor coupling; however, based on my observations the combiner > is not doing anything negative to the signal train. We still have >80% eff. > > I would like to try this with toroids next and compact it down. I'm also > dreaming up a bigger badder amp using this concept. It seems real stable > and doesn't require running the system 'balls to the wall' to get some > serious power from 4 FET and a reasonable PSU voltage. > > 73 Scott