Return-Path: Received: from rly-mf08.mx.aol.com (rly-mf08.mail.aol.com [172.20.29.178]) by air-mf04.mail.aol.com (v124.15) with ESMTP id MAILINMF041-97a4a4dd8b376; Fri, 03 Jul 2009 06:09:14 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mf08.mx.aol.com (v124.15) with ESMTP id MAILRELAYINMF088-97a4a4dd8b376; Fri, 03 Jul 2009 06:08:56 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MMffZ-0001WD-Qp for rs_out_1@blacksheep.org; Fri, 03 Jul 2009 11:07:01 +0100 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MMffZ-0001W4-3j for rsgb_lf_group@blacksheep.org; Fri, 03 Jul 2009 11:07:01 +0100 Received: from cavuit02.kulnet.kuleuven.be ([134.58.240.44]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MMffX-0004LJ-Ep for rsgb_lf_group@blacksheep.org; Fri, 03 Jul 2009 11:07:01 +0100 Received: from smtps01.kuleuven.be (smtpshost01.kulnet.kuleuven.be [134.58.240.74]) by cavuit02.kulnet.kuleuven.be (Postfix) with ESMTP id 9BBFF51C00E for ; Fri, 3 Jul 2009 12:06:48 +0200 (CEST) Received: from PC_van_Rik.fys.kuleuven.be (dhcp-10-33-85-106.fys.kuleuven.be [10.33.85.106]) by smtps01.kuleuven.be (Postfix) with ESMTP id 865C531E702 for ; Fri, 3 Jul 2009 12:06:48 +0200 (CEST) X-Mailer: QUALCOMM Windows Eudora Version 7.1.0.9 Date: Fri, 03 Jul 2009 12:07:06 +0200 To: "rsgb_lf_group@blacksheep.org" X-Kuleuven: This mail passed the K.U.Leuven mailcluster From: Rik Strobbe In-Reply-To: <908B19DF06BE4ECEB3A61470A89BEFA8@Black> References: <908B19DF06BE4ECEB3A61470A89BEFA8@Black> Mime-Version: 1.0 Message-Id: <20090703100648.865C531E702@smtps01.kuleuven.be> 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: Re: IGBT in 136 KHz TX? Content-Type: multipart/alternative; boundary="=====================_11861972==.ALT" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.0 required=5.0 tests=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-IP: 193.82.116.20 --=====================_11861972==.ALT Content-Type: text/plain; charset="us-ascii"; format=flowed 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. Collector Current of 60A (200A pulsed), max.. dissipation of 200W and a saturation 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, > >havn't actually tried it myself on 137 kHz. But from past experience >I'd say that while IGBTs may have less DC loss, they are much slower >(especially during turnoff). They can be used as effient switches at >some tens of kHz, whereas MOSFETs will easily go up to several MHz. > >Kind regards, >Markus, DF6NM > >----- Original Message ----- >From: F6CWN >To: rsgb_lf_group@blacksheep.org >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 > --=====================_11861972==.ALT Content-Type: text/html; charset="us-ascii" 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. Collector Current of 60A (200A pulsed), max.. dissipation of 200W and a saturation 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,
 
havn't actually tried it myself on 137 kHz. But from past experience I'd say that while IGBTs may have less DC loss, they are much slower (especially during turnoff). They can be used as effient switches at some tens of kHz, whereas MOSFETs will easily go up to several MHz.
 
Kind regards,
Markus, DF6NM
 
----- Original Message -----
From: F6CWN
To: rsgb_lf_group@blacksheep.org
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
 
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