Return-Path: Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by mtain-dc01.r1000.mx.aol.com (Internet Inbound) with ESMTP id 9AE8438000082; Thu, 28 Jun 2012 18:21:29 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1SkN4O-0008Uq-8O for rs_out_1@blacksheep.org; Thu, 28 Jun 2012 23:20:12 +0100 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1SkN4N-0008Uh-JH for rsgb_lf_group@blacksheep.org; Thu, 28 Jun 2012 23:20:11 +0100 Received: from relay.uni-heidelberg.de ([129.206.100.212]) by relay1.thorcom.net with esmtps (TLSv1:AES256-SHA:256) (Exim 4.77) (envelope-from ) id 1SkN4E-0006QI-V7 for rsgb_lf_group@blacksheep.org; Thu, 28 Jun 2012 23:20:10 +0100 Received: from freitag.iup.uni-heidelberg.de (freitag.iup.uni-heidelberg.de [129.206.29.204]) by relay.uni-heidelberg.de (8.14.1/8.14.1) with ESMTP id q5SMK1FM031708 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO) for ; Fri, 29 Jun 2012 00:20:01 +0200 Received: from [129.206.22.206] (pc206.iup.uni-heidelberg.de [129.206.22.206]) by freitag.iup.uni-heidelberg.de (8.12.11.20060308/8.11.2) with ESMTP id q5SMK17x015011 for ; Fri, 29 Jun 2012 00:20:01 +0200 Message-ID: <4FECD820.8060105@iup.uni-heidelberg.de> Date: Fri, 29 Jun 2012 00:18:08 +0200 From: =?UTF-8?B?U3RlZmFuIFNjaMOkZmVy?= User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; de; rv:1.9.1.8) Gecko/20100227 Thunderbird/3.0.3 MIME-Version: 1.0 To: rsgb_lf_group@blacksheep.org References: <4FEB8A2F.3030504@iup.uni-heidelberg.de> <7E7DFBB4D102A04DB5ADC88D66628A4A0FAB65D1@ICTS-S-MBX5.luna.kuleuven.be> <82ECFF6D94B94BED9D93B5580549A409@Extensa> <1340872602.49196.YahooMailNeo@web171602.mail.ir2.yahoo.com> <4FEC18F4.9050608@online.fr> <1340875355.96079.YahooMailNeo@web171602.mail.ir2.yahoo.com> <1340876781.29716.YahooMailNeo@web171601.mail.ir2.yahoo.com> <4FEC7DDF.8050906@iup.uni-heidelberg.de> <1340908899.62897.YahooMailNeo@web171605.mail.ir2.yahoo.com> In-Reply-To: <1340908899.62897.YahooMailNeo@web171605.mail.ir2.yahoo.com> X-Spam-Score: -0.7 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Hi Pete, Am 28.06.2012 20:41, schrieb M0FMT: > But they have one of the toroids (T1) wow and its not a min order > either double wow! You can make the RFC1 from such a core used for T1 too, or maybe better two of them. The RFC1 value is not critical. Just if you use a small one it may become hot. Also it should be ferrite of course, not a iron powder core. These would need much more turns. [...] Content analysis details: (-0.7 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [129.206.100.212 listed in list.dnswl.org] -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain 0.0 HTML_MESSAGE BODY: HTML included in message X-Scan-Signature: bc223f74149f392a7d9f3881f05f1e70 Subject: Re: LF: Re: RE: 472 kHz PA running at 12 VDC Content-Type: multipart/alternative; boundary="------------060205080400010406080702" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: * X-Spam-Status: No, hits=1.1 required=5.0 tests=HTML_40_50,HTML_FONT_BIG, HTML_MESSAGE,HTML_TITLE_EMPTY 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-SCOLL-SCORE: 0:2:402625120:93952408 X-AOL-SCOLL-URL_COUNT: 0 x-aol-sid: 3039ac1d40814fecd8e92b34 X-AOL-IP: 195.171.43.25 X-AOL-SPF: domain : blacksheep.org SPF : none This is a multi-part message in MIME format. --------------060205080400010406080702 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Pete, Am 28.06.2012 20:41, schrieb M0FMT: > But they have one of the toroids (T1) wow and its not a min order > either double wow! You can make the RFC1 from such a core used for T1 too, or maybe better two of them. The RFC1 value is not critical. Just if you use a small one it may become hot. Also it should be ferrite of course, not a iron powder core. These would need much more turns. > Litz can be fabricated from 0.125 Cu/En? Yes of course. The wire pieces are short, so just take a bundle of 8 or 10 or so instead of the litz i'm using. You will see. > Hmm it's plaited ? Oh, plaited, i learned a new word :-) No, just twisted. > Generally I buy my power FETs by the hand full off E-bay they may not > be ideal but are cheap!! 50P (eer 60Ec) (Never mind the quality but > feel the width... principle) and the drivers TC range for slightly more. We pay 0.63 EUR at "Reichelt" (well known in DL :-) ). As mentioned, there are many alternatives to the IRFZ48N. You can use what you want unless the FET: -is a N-CH MOSFET -Drain-Source voltage 55V to 100V (100V is not ideal, watch out for 55 or 60 or 75 or what you find) -On resistance below 0.1 Ohm -Input C (C iss) in the range below 3 nF, better below 2 nF. > I'll keep searching for a bit but if anyone has a kitting list (UK > source) may be they could publish it? > And thanks Stefan nothing under the Sun is "New" but in context it is > new and worth while thanks! Yes, but if i don't write this, someone will inform me that someone has done it before, nearly always :-) As if my intention would be to do something new (instead of simlply making QSOs or beeing on air :-) ) > 73 es GL Pete M0FMT IO91UX 73, Stefan/DK7FC --------------060205080400010406080702 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-MIME-Autoconverted: from 8bit to quoted-printable by relay.uni-heidelberg.de id q5SMK1FM031708 Hi Pete,

Am 28.06.2012 20:41, schrieb M0FMT:
But they have one of the toroids (T1) wow and its not a min order either double wow!
You can make the RFC1 from such a core used for T1 too, or maybe better two of them. The RFC1 value is not critical. Just if you use a small one it may become hot. Also it should be ferrite of course, not a iron powder core. These would need much more turns.

Litz can be fabricated from 0.125 Cu/En?
Yes of course. The wire pieces are short, so just take a bundle of 8 or 10 or so instead of the litz i'm using. You will see.

Hmm it's plait= ed ?
Oh, plaited, i learned a new word :-) No, just twisted.
=C2=A0
Generally=C2=A0I buy my power FETs by the hand full off E-bay they may not be ideal but are cheap!! 50P (eer 60Ec) (Never mind the quality but feel the width... principle)=C2=A0and the drivers TC range for slightly more.
We pay 0.63 EUR at "Reichelt" (well known in DL :-) ).

As mentioned, there are many alternatives to the IRFZ48N. You can use what you want unless the FET:
-is a N-CH MOSFET
-Drain-Source voltage 55V to 100V (100V is not ideal, watch out for 55 or 60 or 75 or what you find)
-On resistance below 0.1 Ohm
-Input C (C iss) in the range below 3 nF, better below 2 nF.

=C2=A0
I'll keep searching for a bit but if anyone has a kitting list (UK source) may be they could publish it?=C2=A0
=C2=A0
And thanks Stefan nothing under the Sun is "New" but in context it is new and worth while thanks!
Yes, but if i don't write this, someone will inform me that someone has done it before, nearly always :-) As if my intention would be to do something new (instead of simlply making QSOs or beeing on air :-) )
73 es GL<= /span> Pete M0FMT IO91UX
=C2=A0
73, Stefan/DK7FC
--------------060205080400010406080702--