Return-Path: Received: (qmail 758 invoked from network); 2 Dec 2002 02:35:44 -0000 Received: from murphys.services.quay.plus.net (212.159.14.225) by mailstore with SMTP; 2 Dec 2002 02:35:44 -0000 X-Priority: 3 X-MSMail-Priority: Normal Received: (qmail 28550 invoked from network); 2 Dec 2002 02:35:40 -0000 Received: from post.thorcom.com (193.82.116.70) by murphys.services.quay.plus.net with SMTP; 2 Dec 2002 02:35:40 -0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106 X-SQ: A Received: from majordom by post.thorcom.com with local (Exim 4.10) id 18IgND-0005bT-00 for rsgb_lf_group-outgoing@blacksheep.org; Mon, 02 Dec 2002 02:31:51 +0000 Received: from [217.72.192.165] (helo=mailgate5.cinetic.de) by post.thorcom.com with esmtp (Exim 4.10) id 18IgND-0005bK-00 for rsgb_lf_group@blacksheep.org; Mon, 02 Dec 2002 02:31:51 +0000 Received: from web.de (fmomail01.dlan.cinetic.de [172.20.1.45]) by mailgate5.cinetic.de (8.11.2/8.11.2/SuSE Linux 8.11.0-0.4) with SMTP id gB22VKX01474 for rsgb_lf_group@blacksheep.org; Mon, 2 Dec 2002 03:31:20 +0100 Date: Mon, 2 Dec 2002 03:31:20 +0100 Message-ID: <200212020231.gB22VKX01474@mailgate5.cinetic.de> MIME-Version: 1.0 Organization: http://freemail.web.de/ From: "Hans-Albrecht Haffa" To: rsgb_lf_group@blacksheep.org Subject: LF: ReNew cores from Micrometals, copare with philips Content-Type: text/plain; charset=iso-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Spam-Status: No, hits=0.9 required=5.0tests=DEAR_SOMEBODY,MIME_EXCESSIVE_QP,MIME_LONG_LINE_QP, NOSPAM_INC,QUOTED_EMAIL_TEXT,SPAM_PHRASE_01_02version=2.42 Sender: Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group rsgb_lf_group@blacksheep.org schrieb am 29.11.02 15:54:03: > G0MRF@aol.com wrote: > > A short note for any home constructors. > > > > Micrometals, producers of the popular T-200-2 and other toroids, have > > introduced a new series called the 200C series. > > > does anyone know of a table of equivalency between the Philips cores and > the Micrometal ones? > > André N4ICK Dear Andre, there is no table of equivalency. Philips, Valvo, Ferroxcube (all the same company) produce ferrites, meanwhile Micrometals is manufacturing iron-powder cores. Amidon ferrites You can also find at Fair-Rite in US, Amidon powder cores at Micrometals. Have a look to the survey or selector chart in the manufacturer`s catalog to find out the fitting material for long-wave or short wave application. As a rule of thumb is the material permeability is a hint for the desired frequency range. urel = 80 f= 3...30 MHz 73kHz....3 MHz also possible 400...1000 f= 73 kHz....7 MHz 2700 f=20 kHz...300kHz 5000...10 000 Audio frequency More upon request. 55, Hans-Albrecht DK 8 ND for a > > ______________________________________________________________________________ Ortsunabhangig und flexibel! Verwalten Sie all Ihre E-Mail-Adressen weltweit mit WEB.DE FreeMail - http://freemail.web.de/features/?mc=021126