Delivered-To: daveyxm@virginmedia.com Received: by 10.50.1.100 with SMTP id 4csp127725igl; Sat, 20 Jul 2013 09:43:12 -0700 (PDT) X-Received: by 10.204.240.15 with SMTP id ky15mr3064534bkb.144.1374338591492; Sat, 20 Jul 2013 09:43:11 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id kj3si2992731bkb.223.2013.07.20.09.43.10 for ; Sat, 20 Jul 2013 09:43:11 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1V0aE5-0006MU-5n for rs_out_1@blacksheep.org; Sat, 20 Jul 2013 17:41:45 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1V0aE4-0006ML-GD for rsgb_lf_group@blacksheep.org; Sat, 20 Jul 2013 17:41:44 +0100 Received: from avasout01.plus.net ([84.93.230.227]) by relay1.thorcom.net with esmtp (Exim 4.77) (envelope-from ) id 1V0aE2-0007Zb-8b for rsgb_lf_group@blacksheep.org; Sat, 20 Jul 2013 17:41:43 +0100 Received: from JulesDesktop ([80.189.51.173]) by avasout01 with smtp id 2ghf1m0023kD0KU01ghgsF; Sat, 20 Jul 2013 17:41:40 +0100 X-CM-Score: 0.00 X-CNFS-Analysis: v=2.1 cv=RZapVTdv c=1 sm=1 tr=0 a=AegJD5AxcBEpnUUBPZJ93A==:117 a=AegJD5AxcBEpnUUBPZJ93A==:17 a=0Bzu9jTXAAAA:8 a=YwC2_tSi7MEA:10 a=Q9fys5e9bTEA:10 a=j0C52R8aAAAA:8 a=ABDoo9vWxJoA:10 a=XfRHHcAGAAAA:8 a=i_dcbix0WYVzBKphblkA:9 a=PUjeQqilurYA:10 a=GSxDZhtoe2UA:10 a=9q3PB6bUXIAA:10 Message-ID: <791A8BEB05F54F66AFD76FFD51D85637@JulesDesktop> From: "Julian Hardstone" To: References: <51EA8793.1020507@freenet.de> <201307201556.25063.smtp01@email.it> <51EA9C1E.5000805@freenet.de> Date: Sat, 20 Jul 2013 17:41:11 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5931 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.6157 X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Wolf - Datasheets for the current Epcos range can be seen on the RS website www.rswww.com which may help further. The N30 ferrite seems to be the successor to N28, and type 212-0926 is the current equivalent at 26.6 × 11.0mm, Al = 4620nH and is ideal for this sort of work, and my preferred choice for rx applications at LF/MF - Julian [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [84.93.230.227 listed in list.dnswl.org] X-Scan-Signature: 2e2f7cbbe9f38dd7bf3fac4fc012e6fc Subject: Re: LF: N28 ferrite material useable on MF ? Content-Type: text/plain; format=flowed; charset="iso-8859-15"; reply-type=response 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=1.6 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 Status: O X-Status: X-Keywords: X-UID: 2452 Wolf - Datasheets for the current Epcos range can be seen on the RS website www.rswww.com which may help further. The N30 ferrite seems to be the successor to N28, and type 212-0926 is the current equivalent at 26.6 × 11.0mm, Al = 4620nH and is ideal for this sort of work, and my preferred choice for rx applications at LF/MF - Julian From: "wolf_dl4yhf" > Hi Claudio, > > Thanks in advance. > > In fact the OD is 25.6 mm (measured). So 26 mm may be the 'nominal' value. > The markings on the core have almost been wiped off, but besides the "N28", > there is another marking "1200" which may be the AL value in nanohenry. > > As a layman's test, I wound 3 turns on the core and exposed it to a 20 Vpp > sinewave for a minute, and it didn't seem to get warm (about 9 uH). So for a > transformer it may be ok. > > Cheers, > Wolf . >