Return-Path: Received: from rly-dc06.mx.aol.com (rly-dc06.mail.aol.com [172.19.136.35]) by air-dc10.mail.aol.com (v124.15) with ESMTP id MAILINDC104-b2b4a64e9ba1d4; Mon, 20 Jul 2009 18:04:01 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-dc06.mx.aol.com (v124.15) with ESMTP id MAILRELAYINDC067-b2b4a64e9ba1d4; Mon, 20 Jul 2009 18:03:40 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MT0w5-0005pu-EX for rs_out_1@blacksheep.org; Mon, 20 Jul 2009 23:02:17 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MT0w4-0005pl-Ru for rsgb_lf_group@blacksheep.org; Mon, 20 Jul 2009 23:02:16 +0100 Received: from smtp27.orange.fr ([80.12.242.96]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MT0vo-0002DG-NB for rsgb_lf_group@blacksheep.org; Mon, 20 Jul 2009 23:02:01 +0100 Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf2718.orange.fr (SMTP Server) with ESMTP id 1C5E61C00082 for ; Tue, 21 Jul 2009 00:02:04 +0200 (CEST) Received: from me-wanadoo.net (localhost [127.0.0.1]) by mwinf2718.orange.fr (SMTP Server) with ESMTP id 10CDD1C00083 for ; Tue, 21 Jul 2009 00:02:04 +0200 (CEST) Received: from acer9412 (ARouen-256-1-75-250.w90-22.abo.wanadoo.fr [90.22.2.250]) by mwinf2718.orange.fr (SMTP Server) with SMTP id AABAC1C00082 for ; Tue, 21 Jul 2009 00:02:03 +0200 (CEST) X-ME-UUID: 20090720220203699.AABAC1C00082@mwinf2718.orange.fr Message-ID: From: "F6CWN" To: References: <908B19DF06BE4ECEB3A61470A89BEFA8@Black> <20090703100648.865C531E702@smtps01.kuleuven.be> Date: Mon, 20 Jul 2009 22:02:01 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2900.5512 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2900.5579 X-Karma: unknown: X-Spam-Score: 3.4 (+++) X-Spam-Report: autolearn=disabled,FORGED_MUA_OUTLOOK=3.36,HTML_MESSAGE=0.001 Subject: Re: LF: Re: IGBT in 136 KHz TX? Content-Type: multipart/alternative; boundary="----=_NextPart_000_00B7_01CA0985.B5E981C0" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: ** X-Spam-Status: No, hits=2.4 required=5.0 tests=FORGED_MUA_OUTLOOK,HTML_30_40, HTML_MESSAGE 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-IP: 193.82.116.20 ------=_NextPart_000_00B7_01CA0985.B5E981C0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hello Markus and Rick! I have only just acquainted myself with your messages. (Just going out from hospital, big blood pressure problem...) Thanks a lot for precious information, of what make fun still! I recovered some ferrites N87 types which should work in 137 KHZ. Another subject interests me, it is the possibility of transmitting wi= th a big spool of several turns (a bit as WD2XDW). But EIRP is much we= aker than with a vertical aerial, then it is necessary to "push more"= in power! VY 73: Jeff =20 ----- Original Message -----=20 From: Rik Strobbe=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Friday, July 03, 2009 10:07 AM Subject: Re: LF: Re: IGBT in 136 KHz TX? Jeff, Marcus, STGW30NC60WD has a turnoff delay of 120ns. Turn on delay and rise /= fall times are better than 30ns. That should be good enough for 137kHz, maybe even for 500kHz. It further has a max. Collector-Emitter Voltage of 600V, max. Collec= tor Current of 60A (200A pulsed), max.. dissipation of 200W and a satu= ration voltage of 2V (@20A). Looks like a good "workhorse" for those who want to experiment with= IGBT's. 73, Rik ON7YD - OR7T At 22:05 26/06/2009, you wrote: Dear Jeff, =20 havn't actually tried it myself on 137 kHz. But from past experien= ce I'd say that while IGBTs may have less DC loss, they are much slowe= r (especially during turnoff). They can be used as effient switches at= some tens of kHz, whereas MOSFETs will easily go up to several MHz. =20 Kind regards, Markus, DF6NM =20 ----- Original Message -----=20 From: F6CWN=20 To: rsgb_lf_group@blacksheep.org=20 Sent: Thursday, June 25, 2009 11:37 PM Subject: LF: IGBT in 136 KHz TX? Good night to all, Anybody would have any experience on the use of IGBT in 136 KHz= amplifiers? Thanks in advance! 73: Jeff / F6CWN=20 ------=_NextPart_000_00B7_01CA0985.B5E981C0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Hello Markus and Rick!
 
I have only just acquainted myself wi= th your=20 messages.
(Just going out from hospital, big blood pressure=20 problem...)
Thanks a lot for precious information= , of what make=20 fun still!
I recovered some ferrites N87 types= which should=20 work in 137 KHZ.
Another subject interests me, it is= the possibility=20 of transmitting with a big spool of several turns (a bit as WD2XDW).= =20 But EIRP is much weaker than with a vertical aerial, then it is= necessary=20 to "push more"  in power!
 
VY 73: Jeff
 
 
 
----- Original Message -----
From:=20 Rik Strobbe
Sent: Friday, July 03, 2009= 10:07=20 AM
Subject: Re: LF: Re: IGBT in= 136 KHz=20 TX?

Jeff, Marcus,

STGW30NC60WD has a turnoff delay= of 120ns.=20 Turn on delay and rise / fall times are better than 30ns.
That sh= ould be=20 good enough for 137kHz, maybe even for 500kHz.
It further has a= max.=20 Collector-Emitter Voltage of 600V, max. Collector Cur= rent of 60A=20 (200A pulsed), max.. dissipation of 200W and a saturation voltage of= 2V=20 (@20A).
Looks like a good "workhorse" for those who want= to=20 experiment with IGBT's.

73, Rik  ON7YD - OR7T

At 22:05=20 26/06/2009, you wrote:
Dear= =20 Jeff,
 
havn't actually tried it= myself on=20 137 kHz. But from past experience I'd say that while IGBTs may hav= e less DC=20 loss, they are much slower (especially during turnoff). They can= be used as=20 effient switches at some tens of kHz, whereas MOSFETs will easily= go up to=20 several MHz.
 
Kind regards,
M= arkus,=20 DF6NM
 
----- Original Message -----
From: F6CWN
To: rsgb_lf_group@blacksheep.org=20
Sent: Thursday, June 25, 2009 11:37 PM
Subject: LF: IGBT in 136 KHz TX?

Good night to all,

 
Anybody would have any experience on the use= of IGBT in=20 136 KHz amplifiers?
Thanks in advance!
73: Jeff / F6CWN

 
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