Return-Path: X-Spam-DCC: paranoid 1356; Body=2 Fuz1=2 Fuz2=2 X-Spam-Checker-Version: SpamAssassin 3.1.3 (2006-06-01) on lipkowski.org X-Spam-Level: X-Spam-Status: No, score=-0.2 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, HTML_40_50,HTML_MESSAGE,RATWARE_GECKO_BUILD,SPF_PASS autolearn=no version=3.1.3 Received: from post.thorcom.com (post.thorcom.com [195.171.43.25]) by paranoid.lipkowski.org (8.13.7/8.13.7) with ESMTP id u2OEUbhj018755 for ; Thu, 24 Mar 2016 15:30:37 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aj6Ai-0006K3-Ox for rs_out_1@blacksheep.org; Thu, 24 Mar 2016 14:23:36 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aj6Ai-0006Jq-Bv for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2016 14:23:36 +0000 Received: from mout01.posteo.de ([185.67.36.65]) by relay1.thorcom.net with esmtps (TLSv1.2:ECDHE-RSA-AES256-GCM-SHA384:256) (Exim 4.86) (envelope-from ) id 1aj6Ag-0003Mt-N5 for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2016 14:23:35 +0000 Received: from dovecot03.posteo.de (dovecot03.posteo.de [172.16.0.13]) by mout01.posteo.de (Postfix) with ESMTPS id 8FECD20E0B for ; Thu, 24 Mar 2016 15:23:33 +0100 (CET) Received: from mail.posteo.de (localhost [127.0.0.1]) by dovecot03.posteo.de (Postfix) with ESMTPSA id 3qW7vn2Vqkz5vN3 for ; Thu, 24 Mar 2016 15:23:33 +0100 (CET) Message-ID: <56F3F864.7020100@posteo.de> Date: Thu, 24 Mar 2016 15:23:32 +0100 From: DK7FC 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: <579355A36AEE9D4FA555C45D556003AB53B5690A@servigilant.vigilant.local> In-Reply-To: <579355A36AEE9D4FA555C45D556003AB53B5690A@servigilant.vigilant.local> X-Scan-Signature: e4d79cc1e5beb0f7c63f6aa3ce129e10 Subject: Re: LF: PA working again. No more QRP for now Content-Type: multipart/alternative; boundary="------------090806080909010003070006" 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-Scanned-By: MIMEDefang 2.56 on 10.1.3.11 Status: O X-Status: X-Keywords: X-UID: 7468 This is a multi-part message in MIME format. --------------090806080909010003070006 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit Hi Luis, The thyristor will bypass the PA for the rest of the night then? Is it in front of or behind the fuse? :-) Some power supplies may not like the idea. Or do you use a car battery in parallel? 73, Stefan Am 24.03.2016 12:01, schrieb VIGILANT Luis Fernández: > Hi MF > > PA is fixed now and current protection added. Running nominal 5A@12V > at the moment > Getting WSPR spots from DL in daylight > > The mosfet was intact ! That explained why it was not showing short > circuit > It was the drain copper track in the PCB that finally burned out > preserving and protecting the fuse > > Not a spot event, but the consequence of many hours running with some > antenna mismatch > and currents over 15A may be. An LM311 and thristor sensing the > voltage from across the Amp meter > will trigger with this current values and bypass the PA for the rest > of the night, if that happens again > > PS: Upss! forgot to set my WSPR message for 1W ERP > > 73 de Luis > EA5DOM > --------------090806080909010003070006 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Hi Luis,

The thyristor will bypass the PA for the rest of the night then? Is it in front of or behind the fuse? :-)
Some power supplies may not like the idea. Or do you use a car battery in parallel?

73, Stefan

Am 24.03.2016 12:01, schrieb VIGILANT Luis Fernández:

Hi MF

PA is fixed now and current protection added. Running nominal 5A@12V at the moment
Getting WSPR spots from DL in daylight

The mosfet was intact ! That explained why it was not showing short circuit

It was the drain copper track in the PCB that finally burned out preserving and protecting the fuse

Not a spot event, but the consequence of many hours running with some antenna mismatch

and currents over 15A may be. An LM311 and thristor sensing the voltage from across the Amp meter

will trigger with this current values and bypass the PA for the rest of the night, if that happens again

PS: Upss! forgot to set my WSPR message for 1W ERP

73 de Luis

EA5DOM

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