Return-Path: Received: from rly-mc09.mx.aol.com (rly-mc09.mail.aol.com [172.21.164.93]) by air-mc02.mail.aol.com (v124.15) with ESMTP id MAILINMC024-d984a452a6cf3; Fri, 26 Jun 2009 16:07:16 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-mc09.mx.aol.com (v124.15) with ESMTP id MAILRELAYINMC098-d984a452a6cf3; Fri, 26 Jun 2009 16:07:11 -0400 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1MKHgD-000695-55 for rs_out_1@blacksheep.org; Fri, 26 Jun 2009 21:05:49 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1MKHgC-00068w-P8 for rsgb_lf_group@blacksheep.org; Fri, 26 Jun 2009 21:05:48 +0100 Received: from imr-ma02.mx.aol.com ([64.12.206.40]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1MKHgB-0003HK-9l for rsgb_lf_group@blacksheep.org; Fri, 26 Jun 2009 21:05:48 +0100 Received: from imo-da03.mx.aol.com (imo-da03.mx.aol.com [205.188.169.201]) by imr-ma02.mx.aol.com (8.14.1/8.14.1) with ESMTP id n5QK5Z89016101 for ; Fri, 26 Jun 2009 16:05:35 -0400 Received: from MarkusVester@aol.com by imo-da03.mx.aol.com (mail_out_v40_r1.5.) id l.bdb.48bc9225 (37082) for ; Fri, 26 Jun 2009 16:05:30 -0400 (EDT) Received: from Black (g230009207.adsl.alicedsl.de [92.230.9.207]) by cia-db06.mx.aol.com (v124.15) with ESMTP id MAILCIADB064-90da4a452a09228; Fri, 26 Jun 2009 16:05:30 -0400 Message-ID: <908B19DF06BE4ECEB3A61470A89BEFA8@Black> From: "Markus Vester" To: References: In-Reply-To: Date: Fri, 26 Jun 2009 22:05:28 +0200 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6000.16480 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6000.16669 X-Spam-Flag:NO X-Karma: unknown: X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: Re: IGBT in 136 KHz TX? Content-Type: multipart/alternative; boundary="----=_NextPart_000_0004_01C9F6AA.371AB460" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.3 required=5.0 tests=HTML_50_60,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-IP: 193.82.116.20 ------=_NextPart_000_0004_01C9F6AA.371AB460 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 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 -----=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 ampl= ifiers? Thanks in advance! 73: Jeff / F6CWN=20 ------=_NextPart_000_0004_01C9F6AA.371AB460 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
Dear Jeff,
 
havn't actually tried it myself on 13= 7=20 kHz. But from past experience I'd say that while IGBTs may= have less=20 DC loss, they are much slower (especially during turnoff). They= can be used=20 as effient switches at some tens of kHz, whereas MOSFETs will eas= ily go up=20 to several MHz.
 
Kind regards,
Markus, DF6NM
 
----- Original Message -----
From:=20 F6CWN=
Sent: Thursday, June 25, 2009= 11:37=20 PM
Subject: LF: IGBT in 136 KHz= TX?

Good night to all,
 
Anybody would have any experience&n= bsp;on the use=20 of IGBT in 136 KHz amplifiers?
Thanks in advance!
73: Jeff / F6CWN
 
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