Return-Path: Received: from rly-df07.mx.aol.com (rly-df07.mail.aol.com [172.19.156.20]) by air-df03.mail.aol.com (v124.15) with ESMTP id MAILINDF033-5664a5dd7c9127; Wed, 15 Jul 2009 09:21:19 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-df07.mx.aol.com (v124.15) with ESMTP id MAILRELAYINDF077-5664a5dd7c9127; Wed, 15 Jul 2009 09:21:16 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MR4Ow-0006Cy-QG for rs_out_1@blacksheep.org; Wed, 15 Jul 2009 14:20:02 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MR4Ov-0006Cp-WF for rsgb_lf_group@blacksheep.org; Wed, 15 Jul 2009 14:20:02 +0100 Received: from smtp148.mail.mud.yahoo.com ([209.191.106.59]) by relay3.thorcom.net with smtp (Exim 4.63) (envelope-from ) id 1MR4Ou-0006JX-4Y for rsgb_lf_group@blacksheep.org; Wed, 15 Jul 2009 14:20:00 +0100 Received: (qmail 87364 invoked from network); 15 Jul 2009 13:19:54 -0000 DomainKey-Signature: a=rsa-sha1; q=dns; c=nofws; s=s1024; d=btinternet.com; h=Received:X-Yahoo-SMTP:X-YMail-OSG:X-Yahoo-Newman-Property:Message-ID:From:To:References:Subject:Date:MIME-Version:Content-Type:Content-Transfer-Encoding:X-Priority:X-MSMail-Priority:X-Mailer:X-MimeOLE; b=pg7NdCZ+xgxLfvI8RpizdxMX8pHHY2vs0/7UsrvywwjTMcCNsGLbhOY1v5H+S8aTHzCA5uwC8qpdpU0ktTGta1cb48yt38b2DriABEj18y++rbUvT+E41ZXNUPM+JBtZfP/xzJCiZUy2f/97Vbni/btAqONXCEiq7/JAOo3IGSY= ; Received: from unknown (HELO lindavideo) (ken.h.wright@86.140.224.132 with login) by smtp148.mail.mud.yahoo.com with SMTP; 15 Jul 2009 13:19:53 -0000 X-Yahoo-SMTP: APVNTmmswBB1ajQe0.MR1eIpHqOdoGKpEnK7HtPhl2t5AIcci3nTdw-- X-YMail-OSG: K7fBWzMVM1m7hpFQR5aQD8tOxfjssphnL5nXF75KespEWSaQF3HgiZeSaz0XrX_XAHvlam5mKD2Wo..q4pG_LS2xxgvhjE4OGf4pl9UPlzmryXLHPZFh7pL9ZT2z.lyjWFl1eAhuQvzFPnPNreGqWOWDkHBqwWjgNhLzXLY8rRHR.Hkg6LKgL96gbSdp1mreS7OR.urF_L4zRXmP0Jt6See7P8QASNUJzp6zYd5sOOGZuSspAw.Z3uxvvx6scaqIGAvLx7S8qho5WicE9unzsD8_AC1qchrmq8KV_k69UkEPt1As6oCUGB1l26qxDrCZH_U53MMYiZXyrD.Ot6xobqzJPa2yfCwAaZN2iQ-- X-Yahoo-Newman-Property: ymail-3 Message-ID: From: "Ken" To: References: <1EDB89E6D3E24E008B4897CFE896A09F@lindavideo> <4A5DD4CB.8020109@usa.net> Date: Wed, 15 Jul 2009 14:19:51 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 DomainKey-Status: good (testing) Subject: Re: LF: Microwave oven transformers Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response 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=1.6 required=5.0 tests=FORGED_MUA_OUTLOOK 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 Hi. Not sure what they do, this was info from the person who sold them to me, he seemed to know a lot about themand using them in PSUs. Maybe someone in this forum can write a short explanation for us. Ken 73deM0KHW ----- Original Message ----- From: "Alberto di Bene" To: Sent: Wednesday, July 15, 2009 2:08 PM Subject: Re: LF: Microwave oven transformers > Ken wrote: > >> I was informed that as they stand the voltage regulation is poor, to >> improve this the 'Core Shunts' should be removed, (these are laminations >> between the two stacks), removal of these 'shunts' also has the effect of >> considerably increasing the magnetisation current. > > Just out of curiosity, what is the purpose of those magnetic shunts when > the > microwave oven transformers are used for their intended application ? > > 73 Alberto I2PHD > >