Return-Path: X-Spam-DCC: paranoid 1170; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,HTML_MESSAGE autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id tA2GdEI9021187 for ; Mon, 2 Nov 2015 17:39:14 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZtI3Q-0008NF-ET for rs_out_1@blacksheep.org; Mon, 02 Nov 2015 16:33:56 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZtI3Q-0008N6-4g for rsgb_lf_group@blacksheep.org; Mon, 02 Nov 2015 16:33:56 +0000 Received: from mail-wm0-f54.google.com ([74.125.82.54]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1ZtI2Z-00025x-Ad for rsgb_lf_group@blacksheep.org; Mon, 02 Nov 2015 16:33:55 +0000 Received: by wmff134 with SMTP id f134so65316168wmf.0 for ; Mon, 02 Nov 2015 08:32:48 -0800 (PST) X-DKIM-Result: Domain=gmail.com Result=Good and Known Domain DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=3V8+XBDKaG4i+0/rN4T4avgRNKCv0LJOicQsIv0qt3g=; b=LeUXKLZhfwRA7PIhwCQuK+vAjWE2e5k1wP5X/6fkSXOaybZ3m44FTaFVC7cbh0Ql1k 9nsi4r7tSxqVewcpBiMtMlfey2ttUumSXByzqHY6qn4u+55JBxiarHs1MYCPbQLYR1fk 5k/lJwd0zLbjbPviapsh6cNe7xkNXKnxy2jM/OySM9NYMtGdMFSdEweZS4hD8+mgrSsI kMBo+opLL6viZoyAS01FDr7gupuxmzbHnCJD5OlhLQAR58HjJt6c3dnkkjXpDR6dIoqM CQqltyMEIO2T6B3/BWCoUFVA2RLVDJoVGkymZfzqEn492gLBOxQPYF+gUW5ZWcQC4S8q OH5w== MIME-Version: 1.0 X-Received: by 10.28.7.68 with SMTP id 65mr14021883wmh.19.1446481968686; Mon, 02 Nov 2015 08:32:48 -0800 (PST) Received: by 10.28.183.139 with HTTP; Mon, 2 Nov 2015 08:32:48 -0800 (PST) In-Reply-To: <56378DE3.5808.166E2A2@mike.dennison.ntlworld.com> References: <1887849276.20151030143118@chriswilson.tv> <56378825.5295.1507608@mike.dennison.ntlworld.com> <56378DE3.5808.166E2A2@mike.dennison.ntlworld.com> Date: Mon, 2 Nov 2015 16:32:48 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 318d3d373f5ffaa82e0969bd1985b258 Subject: Re: Re[2]: LF: Zmag of 45.6 Ohms OK, or should I try for better? Content-Type: multipart/alternative; boundary=001a1144224aeae91b05239153f8 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.10 Status: O X-Status: X-Keywords: X-UID: 4798 --001a1144224aeae91b05239153f8 Content-Type: text/plain; charset=UTF-8 Ae = 152mm^2 So a bit smaller than Chris's ETD49 core. Andy On 2 November 2015 at 16:22, Mike Dennison wrote: > The ID is 40mm. > It is similar to the one at: > http://uk.farnell.com/ferroxcube/tx58-41-18-3c90/ferrite-core-toroid- > 3c90/dp/1784191 > > Mike > ==== > > > Yes, the dimension that actually defines the core cross sectional > > area. That's the vital parameter when choosing Nmin for a given > > frequency / voltage > > > > Andy > > > > > > On 2 November 2015 at 15:58, Mike Dennison > > wrote: > > > > > > That is not the core diameter - if it were it would be an ENORMOUS > > > > core. > > > > > > > > > Well, I specified the core type as Chris was originally using a > > > > > different type, but of course the size is relevant. The diameter > > > > > is 55mm and I use two cores, one on top of the other, to reduce > > > > > heat. > > > > > > 55mm is the OD. Did you need the ID? > > > > > > Mike > > > ==== > > > > > > > > > > > > > > ----- > > No virus found in this message. > > Checked by AVG - www.avg.com > > Version: 2016.0.7163 / Virus Database: 4457/10933 - Release Date: > > 11/02/15 > > > > --001a1144224aeae91b05239153f8 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Ae =3D 152mm^2

So a bit smaller than Ch= ris's ETD49 core. =C2=A0 =C2=A0

Andy


= On 2 November 2015 at 16:22, Mike Dennison <mike.dennison@ntlworl= d.com> wrote:
The ID is 40m= m.
It is similar to the one at:
http://uk.farnell.com= /ferroxcube/tx58-41-18-3c90/ferrite-core-toroid-
3c90/dp/1784191

Mike
=3D=3D=3D=3D

> Yes, the dimension that actually defines the core cross sectional
> area. That's the vital parameter when choosing Nmin for a given > frequency / voltage
>
> Andy
>
>
> On 2 November 2015 at 15:58, Mike Dennison
> <mike.dennison@ntlwor= ld.com> wrote:
>
> > > That is not the core diameter - if it were it would be an EN= ORMOUS
> > > core.
> > >
> > > > Well, I specified the core type as Chris was originally= using a
> > > > different type, but of course the size is relevant. The= diameter
> > > > is 55mm and I use two cores, one on top of the other, t= o reduce
> > > > heat.
> >
> > 55mm is the OD. Did you need the ID?
> >
> > Mike
> > =3D=3D=3D=3D
> >
> >
>
>
>
> -----
> No virus found in this message.
> Checked by AVG - www.avg.com
> Version: 2016.0.7163 / Virus Database: 4457/10933 - Release Date:
> 11/02/15




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