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=-2.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_50_60,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 tA2DvoYk020564 for ; Mon, 2 Nov 2015 14:57:50 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1ZtFZY-0006wv-Ch for rs_out_1@blacksheep.org; Mon, 02 Nov 2015 13:54:56 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1ZtFZX-0006wm-Vu for rsgb_lf_group@blacksheep.org; Mon, 02 Nov 2015 13:54:55 +0000 Received: from mail-wm0-f49.google.com ([74.125.82.49]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES128-GCM-SHA256:128) (Exim 4.86) (envelope-from ) id 1ZtFYa-0001I4-Sq for rsgb_lf_group@blacksheep.org; Mon, 02 Nov 2015 13:54:54 +0000 Received: by wmll128 with SMTP id l128so61487192wml.0 for ; Mon, 02 Nov 2015 05:53:36 -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=Hgnmi3qQEwkPr69N+bbg2fW5u/2qAKM5AoSXQl2l8q4=; b=Et2CU2a8bXGNCZmsQEEZEguM+Zeh1Zk5PykjamomfMda4Htlwj5FjcPbwsAVgnI1Vk rhR415wSnYrVgdp70KTn2uc0X6Jo/V/hTm8NYg27aFBKzHc+qNlsTK2xHTGy19QFw2DU rc/q89Df6s2bqUmlLp5JlaHolyhmWIebR59Fxd23x3i/F6Xo3pOTNUzzdajI3+lMCaAk MelHvyxRaW35+jSHKclrNBUuCu2RWE8KUnu3ZCzn+rsO7mhuHph1HvInrZfRkjZQEWuL ejBw61qxQ0uoVdgLvjoHp+TSh8iEE3Q0afF82KtTvjbL0fw25OJxTqoP1Z9sLPZ2jC4O pd9g== MIME-Version: 1.0 X-Received: by 10.28.6.142 with SMTP id 136mr14417754wmg.9.1446472416601; Mon, 02 Nov 2015 05:53:36 -0800 (PST) Received: by 10.28.183.139 with HTTP; Mon, 2 Nov 2015 05:53:36 -0800 (PST) In-Reply-To: <1778466353.20151102134246@chriswilson.tv> References: <1887849276.20151030143118@chriswilson.tv> <5633D56C.20659.23BE4D8@mike.dennison.ntlworld.com> <316685691.20151031121552@chriswilson.tv> <56375E6E.24975.AD8B5E@mike.dennison.ntlworld.com> <1778466353.20151102134246@chriswilson.tv> Date: Mon, 2 Nov 2015 13:53:36 +0000 Message-ID: From: Andy Talbot To: rsgb_lf_group@blacksheep.org X-Scan-Signature: 0cdfd8d5ce44f1724c623c4ac9f44df6 Subject: Re: Re[4]: LF: Zmag of 45.6 Ohms OK, or should I try for better? Content-Type: multipart/alternative; boundary=001a1144270691b4ca05238f1a4a 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: 4787 --001a1144270691b4ca05238f1a4a Content-Type: text/plain; charset=UTF-8 Ae is specified as 211mm^2 for that size core, So, at 137kHz Mike's 16 turns with a Bmax of 0.1Tesla means : V = 4.44.F.N.A.B = 205 Vrms In a 50 ohm system this equates to 840 Watts Andy G4JNT On 2 November 2015 at 13:42, Chris Wilson wrote: > Hello Andy, > > Monday, November 2, 2015 > > > This is a link to the cores I have in this material Andy: > > > http://uk.farnell.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=15001&langId=44&urlRequestType=Base&partNumber=3056417&storeId=10151 > > > > 3C90 is a type of ferrite material, and doesn't specify a transformer > type. > > > > What is the Ae (cross sectional area) of that core? > > Or just the diameter to work it out from? > > > > Andy > > > > > > > > > > -- > Best regards, > Chris mailto:chris@chriswilson.tv > > > --001a1144270691b4ca05238f1a4a Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
Ae is specified as 211mm^2 for that size core,=C2=A0
<= br>
So, =C2=A0at 137kHz Mike's 16 turns with a Bmax of 0.1Tes= la means :

V =3D 4.44.F.N.A.B =3D =C2=A0205 Vrms

In a 50 ohm system this equates to 840 Watts
<= div>
Andy =C2=A0G4JNT



On 2 November 2= 015 at 13:42, Chris Wilson <chris@chriswilson.tv> wrote:<= br>
Hello Andy,

Monday, November 2, 2015


This is a link to the cores I have in this material Andy:

http:/= /uk.farnell.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=3D15001&= amp;langId=3D44&urlRequestType=3DBase&partNumber=3D3056417&stor= eId=3D10151


> 3C90 is a type of ferrite material, and doesn't specify a transfor= mer type.


> What is the Ae (cross sectional area) of that core?
> Or just the diameter to work it out from?


> Andy









--
Best regards,
=C2=A0Chris=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 mailto:chris@chriswilson.tv



--001a1144270691b4ca05238f1a4a--