Return-Path: Received: from mtain-me08.r1000.mx.aol.com (mtain-me08.r1000.mx.aol.com [172.29.96.144]) by air-db03.mail.aol.com (v129.4) with ESMTP id MAILINDB034-86974c64148639d; Thu, 12 Aug 2010 11:34:30 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-me08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 39B5A380000B3; Thu, 12 Aug 2010 11:34:27 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OjZmT-0008LM-9J for rs_out_1@blacksheep.org; Thu, 12 Aug 2010 16:33:21 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OjZmS-0008LD-RD for rsgb_lf_group@blacksheep.org; Thu, 12 Aug 2010 16:33:20 +0100 Received: from cavuit01.kulnet.kuleuven.be ([134.58.240.43]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OjZmR-0001jb-UF for rsgb_lf_group@blacksheep.org; Thu, 12 Aug 2010 16:33:20 +0100 Received: from smtps02.kuleuven.be (smtpshost02.kulnet.kuleuven.be [134.58.240.75]) by cavuit01.kulnet.kuleuven.be (Postfix) with ESMTP id 333287B804A for ; Thu, 12 Aug 2010 17:33:10 +0200 (CEST) Received: from ICTS-S-HUB-N1.luna.kuleuven.be (icts-s-hub-n1.luna.kuleuven.be [10.112.9.11]) by smtps02.kuleuven.be (Postfix) with ESMTP id 0F53FF3862 for ; Thu, 12 Aug 2010 17:33:10 +0200 (CEST) Received: from ICTS-S-EXC2-CA.luna.kuleuven.be ([10.112.11.13]) by ICTS-S-HUB-N1.luna.kuleuven.be ([10.112.9.11]) with mapi; Thu, 12 Aug 2010 17:33:10 +0200 X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe To: "rsgb_lf_group@blacksheep.org" Date: Thu, 12 Aug 2010 17:33:09 +0200 Thread-Topic: LF: T200-2 toroid cores Thread-Index: Acs6LwclXx4H9npYStauMoKW0EMJmAAAkk7M Message-ID: References: , In-Reply-To: Accept-Language: nl-NL, nl-BE Content-Language: nl-BE X-MS-Has-Attach: X-MS-TNEF-Correlator: acceptlanguage: nl-NL, nl-BE MIME-Version: 1.0 X-KULeuven-Information: Katholieke Universiteit Leuven X-KULeuven-Scanned: Found to be clean X-KULeuven-Envelope-From: rik.strobbe@fys.kuleuven.be X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: RE: LF: T200-2 toroid cores Content-Type: multipart/alternative; boundary="_000_BF4A524700075746A6467658DFC7102C510AC52D89ICTSSEXC2CAlu_" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.5 required=5.0 tests=HTML_40_50,HTML_MESSAGE, TO_ADDRESS_EQ_REAL 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: 3039ac1d60904c64148365a0 X-AOL-IP: 193.82.116.20 X-AOL-SPF: domain : blacksheep.org SPF : none X-Mailer: Unknown (No Version) --_000_BF4A524700075746A6467658DFC7102C510AC52D89ICTSSEXC2CAlu_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Warren, thanks for the hint. I just had a look and Jay actually uses T225A-2 toroids. The "A" means alm= ost double height (and thus almost double cross sectional area). But Jay states that "Both filters have been tested to power levels in exce= ss of 1000 watts and should be capable of handling significantly more powe= r.". So I assume that the T200-2 toroids will be OK for the 400-500W power leve= l I have in mind. 73, Rik ON7YD - OR7T ________________________________ Van: owner-rsgb_lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.or= g] namens Warren Ziegler [wd2xgj@gmail.com] Verzonden: donderdag 12 augustus 2010 16:56 Aan: rsgb_lf_group@blacksheep.org Onderwerp: Re: LF: T200-2 toroid cores Rik, See Jay's web page, he uses T225-2 cores at the kW level for LPF: http://www.w1vd.com/LPF.html -- 73 Warren K2ORS WD2XGJ WD2XSH/23 WE2XEB/2 WE2XGR/1 On Thu, Aug 12, 2010 at 9:27 AM, Rik Strobbe > wrote: Dear all, does anyone have experience with T200-2 cores (amidon) for 500kHz lowpass= filters ? Up to what power are they suitable ? 73, Rik ON7YD - OR7T --_000_BF4A524700075746A6467658DFC7102C510AC52D89ICTSSEXC2CAlu_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Warren,
 
thanks for the hint.
I just had a look and Jay actually= uses T225A-2 toroids. The "A" means almost double height (and= thus almost double cross sectional area).
But Jay states that "Both filters have been tested to power levels in excess of 1000= watts and should be capable of handling significantly more power.".<= /font>
So I assume that the T200-2 toroids= will be OK for the 400-500W power level I have in mind.<= /div>
 
73, Rik  ON7YD - OR7T
 
Van: owner-rsgb_= lf_group@blacksheep.org [owner-rsgb_lf_group@blacksheep.org] namens Warren= Ziegler [wd2xgj@gmail.com]
Verzonden: donderdag 12 augustus 2010 16:56
Aan: rsgb_lf_group@blacksheep.org
Onderwerp: Re: LF: T200-2 toroid cores

Rik,

  See Jay's web page, he uses T225-2 cores at the kW level for LPF: http://www.w1vd= .com/LPF.html

--
73 Warren K2ORS
                WD2XGJ
                WD2XSH/23
                WE2XEB/2
                WE2XGR/1


On Thu, Aug 12, 2010 at 9:27 AM, Rik Strobbe <Rik.Strobbe@fys.kuleuve= n.be> wrote:
Dear all,

does anyone have experience with T200-2 cores (amidon) for 500kHz lowpass= filters ?
Up to what power are they suitable ?

73, Rik  ON7YD - OR7T




 
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