Return-Path: Received: from mtain-db11.r1000.mx.aol.com (mtain-db11.r1000.mx.aol.com [172.29.64.95]) by air-md08.mail.aol.com (v129.4) with ESMTP id MAILINMD082-8b914c03cfad35d; Mon, 31 May 2010 11:03:09 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-db11.r1000.mx.aol.com (Internet Inbound) with ESMTP id 7BFB63800015A; Mon, 31 May 2010 11:03:06 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OJ6VI-00029D-Tk for rs_out_1@blacksheep.org; Mon, 31 May 2010 16:02:12 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OJ6VI-000292-IB for rsgb_lf_group@blacksheep.org; Mon, 31 May 2010 16:02:12 +0100 Received: from mailout-us.gmx.com ([74.208.5.67]) by relay1.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1OJ6VG-0007s2-6J for rsgb_lf_group@blacksheep.org; Mon, 31 May 2010 16:02:12 +0100 Received: (qmail invoked by alias); 31 May 2010 15:02:03 -0000 Received: from 75-168-133-142.mpls.qwest.net (EHLO [192.168.1.100]) [75.168.133.142] by mail.gmx.com (mp-us003) with SMTP; 31 May 2010 11:02:03 -0400 X-Authenticated: #60769621 X-Provags-ID: V01U2FsdGVkX19HoU9phmJH+TTHAM1tqF/S/tBIuWmNpLQTJ6AF87 1vS8RQkcYcchPE Message-ID: <4C03CF6B.5040909@gmx.com> Date: Mon, 31 May 2010 10:02:03 -0500 From: "Mike.WE0H" User-Agent: Thunderbird 2.0.0.24 (X11/20100317) MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <20100530.082855.1608.1.riese-k3djc@juno.com> <4C02783D.9020502@gmx.com> <4C0326F4.5050609@gmx.com> <4C03CD6E.9020906@iup.uni-heidelberg.de> In-Reply-To: <4C03CD6E.9020906@iup.uni-heidelberg.de> X-Y-GMX-Trusted: 0 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: Re: LF: 8.97kc - TV transformer info needed Content-Type: text/plain; charset=ISO-8859-1; format=flowed 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 x-aol-global-disposition: G x-aol-sid: 3039ac1d405f4c03cfaa09e2 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) Hi Stefan, How many turns should I wind for a primary side? 8 to 10 maybe? I was using a 48.4 milli-henry primary winding with the secondary at 4.2 henry. There are many primary windings on this transformer but this 48.4 milli-henry winding gave me the highest output voltage on the secondary. 300v p-p with only .7v p-p input. Mike WE0H Stefan S wrote: > Mike, > > Try to use just 65 % of the turns of your primary winding and i bet the > optimum will be on 9 kHz! :-) > > 73, Stefan