Return-Path: Received: from rly-df05.mx.aol.com (rly-df05.mail.aol.com [172.19.156.18]) by air-df08.mail.aol.com (v126.13) with ESMTP id MAILINDF081-54d4b1939732b; Fri, 04 Dec 2009 11:32:15 -0500 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by rly-df05.mx.aol.com (v125.7) with ESMTP id MAILRELAYINDF052-54d4b1939732b; Fri, 04 Dec 2009 11:31:49 -0500 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1NGb3G-0007yK-PC for rs_out_1@blacksheep.org; Fri, 04 Dec 2009 16:30:38 +0000 Received: from [83.244.159.144] (helo=relay3.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1NGb3G-0007yB-3u for rsgb_lf_group@blacksheep.org; Fri, 04 Dec 2009 16:30:38 +0000 Received: from out1.ip05ir2.opaltelecom.net ([62.24.128.241]) by relay3.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1NGb3E-0006k7-Dr for rsgb_lf_group@blacksheep.org; Fri, 04 Dec 2009 16:30:38 +0000 X-IronPort-Anti-Spam-Filtered: true X-IronPort-Anti-Spam-Result: Aj8FAE7IGEtOlpNG/2dsb2JhbACCIy2LTwbJG4QzBIFn X-IronPort-AV: E=Sophos;i="4.47,342,1257120000"; d="scan'208,217";a="137063564" Received: from unknown (HELO xphd97xgq27nyf) ([78.150.147.70]) by out1.ip05ir2.opaltelecom.net with SMTP; 04 Dec 2009 16:30:30 +0000 Message-ID: <000a01ca74ff$163eb010$0401a8c0@xphd97xgq27nyf> From: "mal hamilton" To: "rsgb" Date: Fri, 4 Dec 2009 16:30:26 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook Express 6.00.2600.0000 X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2600.0000 X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: LF: FUSE TEST Content-Type: multipart/alternative; boundary="----=_NextPart_000_0007_01CA74FF.15C05850" X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.8 required=5.0 tests=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_0007_01CA74FF.15C05850 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Has anyone tested the ACTUAL blow current for fuses eg 5A 10A 30A.. I often do not have fuses at the correct value and FUSE down only to= find that I can run them at considerably higher amps than rated eg 30= A fuses at 50A and they fail to blow. This is intermittent use say 30%= - 50% in psu's used for CW and QRS3 normally in FET AMPS This is normal fuse wire bought wrapped on card. It looks like your PA fets could be in trouble under certain circumsta= nces. de mal/g3kev ------=_NextPart_000_0007_01CA74FF.15C05850 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Has anyone tested the ACTUAL blow cur= rent for fuses=20 eg 5A 10A 30A..

I often do not have fuses at the corr= ect value and=20 FUSE down only to find that I can run them at considerably higher amps= than=20 rated eg 30A fuses at 50A and they fail to blow. This is intermittent= use say=20 30% - 50% in psu's used for CW and QRS3 normally in FET AMPS

This is normal fuse wire bought wrapp= ed on=20 card.

It looks like your PA fets could be= in trouble=20 under certain circumstances.

de mal/g3kev

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