Return-Path: Received: from mtain-da09.r1000.mx.aol.com (mtain-da09.r1000.mx.aol.com [172.29.64.81]) by air-ma01.mail.aol.com (v129.4) with ESMTP id MAILINMA014-b4f24c0159f01bd; Sat, 29 May 2010 14:16:16 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-da09.r1000.mx.aol.com (Internet Inbound) with ESMTP id E890C38000208; Sat, 29 May 2010 14:16:14 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OIQZ7-0007sQ-Lc for rs_out_1@blacksheep.org; Sat, 29 May 2010 19:15:21 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OIQZ7-0007sH-9f for rsgb_lf_group@blacksheep.org; Sat, 29 May 2010 19:15:21 +0100 Received: from out1.ip07ir2.opaltelecom.net ([62.24.128.243]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OIQZ5-0000MV-Bi for rsgb_lf_group@blacksheep.org; Sat, 29 May 2010 19:15:21 +0100 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: AvkIAIP2AExcEYSa/2dsb2JhbACHXYpZjAVxvQ2FFgQ X-IronPort-AV: E=Sophos;i="4.53,323,1272841200"; d="scan'208";a="449380207" Received: from unknown (HELO xphd97xgq27nyf) ([92.17.132.154]) by out1.ip07ir2.opaltelecom.net with SMTP; 29 May 2010 19:15:12 +0100 Message-ID: <003601caff5a$da591090$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: References: <38A51B74B884D74083D7950AD0DD85E82A1C00@File-Server-HST.hst.e-technik.tu-darmstadt.de> , <1344257766.4243506.1275063067203.JavaMail.fmail@mwmweb035> <38A51B74B884D74083D7950AD0DD85E82A1C0D@File-Server-HST.hst.e-technik.tu-darmstadt.de>,<4C012CA7.5030004@gmx.com> <4C0134FB.507@gmx.com> Date: Sat, 29 May 2010 19:15:00 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,none Subject: LF: Re: Re: 8.97kc - TV transformer info needed Content-Type: text/plain; charset="iso-8859-1" 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: 3039ac1d40514c0159ee0aba X-AOL-IP: 193.82.116.20 Mike You need one of the older ones as I described earlier 3c5 material I looked at a couple of more recent ones today and they are totally different but I did measure an inductance of 500mh on one and 60mh on the other. They are quite large and work well on all LF/MF FREQS De mal/g3kev ----- Original Message ----- From: "Mike.WE0H" To: Sent: Saturday, May 29, 2010 4:38 PM Subject: LF: Re: 8.97kc - TV transformer info needed > Hi Rik, > > Dang, that is a serious arc. All my flyback transformers have a case > around them with epoxy potting compound. They are out of computer > monitor boards. I will look for an old TV chassis here and see if that > flyback looks like the one in your picture. > > Thanks much, > Mike > WE0H > > > Rik Strobbe wrote: > > Mike, > > > > it is the fly-back transformer in the HV PS or a TV set. > > Have a look at http://members.iinet.net.au/~pterren/FlybackTV150W.jpg and you will see what is meant. > > Most likely you will have to rewind it. > > It worked fine here as output transformer in my 136kHz/450W TX but got too hot in my 502kHz/300W TX. > > > > 73, Rik ON7YD - OR7T >