Return-Path: Received: from mtain-dh11.r1000.mx.aol.com (mtain-dh11.r1000.mx.aol.com [172.29.65.31]) by air-dc07.mail.aol.com (v129.4) with ESMTP id MAILINDC074-86a54c402f351bd; Fri, 16 Jul 2010 06:06:45 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-dh11.r1000.mx.aol.com (Internet Inbound) with ESMTP id BA5DC380003AA; Fri, 16 Jul 2010 06:06:43 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OZhmy-0001lZ-8l for rs_out_1@blacksheep.org; Fri, 16 Jul 2010 11:05:04 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OZhmx-0001lQ-RF for rsgb_lf_group@blacksheep.org; Fri, 16 Jul 2010 11:05:03 +0100 Received: from moutng.kundenserver.de ([212.227.17.10]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OZhmx-00036L-2c for rsgb_lf_group@blacksheep.org; Fri, 16 Jul 2010 11:05:03 +0100 Received: from JJ (cpc2-nmal1-0-0-cust547.croy.cable.virginmedia.com [82.43.138.36]) by mrelayeu.kundenserver.de (node=mrbap0) with ESMTP (Nemesis) id 0Lpxjz-1PFNOx1S4t-00fPGF; Fri, 16 Jul 2010 12:04:56 +0200 Message-ID: From: "GROUPS M0" To: References: In-Reply-To: Date: Fri, 16 Jul 2010 11:03:37 +0100 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18197 X-Provags-ID: V02:K0:ki+5z9Fc5K9wMmNiKGC2Lei3CjF+9Nj1Ut2VZkzLNbS sZm9ZdLIb1LZNm1nY3Q5K4PlXJhjiMgbDQVrg7WymDepXe3XdC PM+daxuI74vNn3549nqRrjiObSlE+3WG8rf9hCOXWkest1cXC1 37w+oS1SN8ifmrCYeb5V6NBeAc4aYUi9qxXOIDMWUp8qt9+SbM 6X7z12XA5e3xmpeeeZg0//ixqGhNTW4wauQvlxowJ4= X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: Torroids Content-Type: multipart/alternative; boundary="----=_NextPart_000_0069_01CB24D6.8ABCEE70" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.6 required=5.0 tests=HTML_40_50,HTML_MESSAGE, MISSING_OUTLOOK_NAME 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-global-disposition: G x-aol-sid: 3039ac1d411f4c402f33528b X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none ------=_NextPart_000_0069_01CB24D6.8ABCEE70 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Chris, =20 The references 3C85 and 3C90 specify only the material grade but no th= e shape and size of the toroid. =20 We are more familiar with Amidon based references such as FT-50-43 tha= t specifies a ferrite toroidal ring core, grade 43 and 0.5"x0.281"x0.1= 81" in size. =20 =20 The 3C90 grade comes from Ferroxcube; it is a Manganese-zinc (MnZn) fe= rrite for applications below 100 KHz appropriate for high-level drive= transformers. =20 73s. =20 Juan, M0WWA ----- Original Message -----=20 From: Chris=20 To: RSGB LF Group=20 Sent: Thursday, July 15, 2010 4:47 PM Subject: LF: Torroids Hi again Juan, Sadly after an exchange of e-mails, that website you gave me cannot= supply the correct type of torroids. They say I need type 78 (for 3C8= 5 or 3C90 equivalent) and they don't do them. I wish they'd all stick to the same format for identification of the= various types. Thanks for trying! Chris, G4AYT. ------=_NextPart_000_0069_01CB24D6.8ABCEE70 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Hi Chris,

The references 3C85 and 3C9= 0 specify only=20 the material grade but no the shape and size of the toroid.

We are more familiar with= Amidon based=20 references such as FT-50-43 that specifies a ferrite toroidal ring cor= e, grade=20 43 and 0.5=94x0.281=94x0.181=94 in size.

The 3C90 grade comes from= Ferroxcube; it=20 is a Manganese-zinc=20 (MnZn) ferrite for applications below 100 KHz appropriate for= high-level=20 drive transformers.

73s.

Juan, M0WWA

----- Original Message -----

From:=20 Chris

To: RSGB= LF Group

Sent: Thursday, July 15, 2010= 4:47=20 PM

Subject: LF: Torroids

Hi again Juan,

Sadly after an exchange of e-mails,= that website=20 you gave me cannot supply the correct type of torroids. Th= ey say I=20 need type 78 (for 3C85 or 3C90 equivalent) and they don't do=20 them.

I wish they'd all stick to the same= format for=20 identification of the various types.

Thanks for trying!

Chris,=20 G4AYT.

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