Return-Path: X-Spam-DCC: paranoid 104; 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=-1.9 required=5.0 tests=BAYES_00,DNS_FROM_AHBL_RHSBL, FORGED_RCVD_HELO,HTML_30_40,HTML_MESSAGE,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 u2OHBxmp019012 for ; Thu, 24 Mar 2016 18:11:59 +0100 Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1aj8fh-0006kf-Ja for rs_out_1@blacksheep.org; Thu, 24 Mar 2016 17:03:45 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1aj8fh-0006kW-9Z for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2016 17:03:45 +0000 Received: from s16315160.onlinehome-server.info ([87.106.80.234] helo=mail.vigilant.es) by relay1.thorcom.net with esmtp (Exim 4.86) (envelope-from ) id 1aj8ff-0004ZP-2j for rsgb_lf_group@blacksheep.org; Thu, 24 Mar 2016 17:03:44 +0000 Received: from servigilant.vigilant.local ([87.216.178.132]) by vigilant.es with MailEnable ESMTP; Thu, 24 Mar 2016 18:03:09 +0100 Received: from servigilant.vigilant.local ([fe80::3cdf:95f8:c1c9:3931]) by servigilant.vigilant.local ([fe80::3cdf:95f8:c1c9:3931%13]) with mapi id 14.03.0123.003; Thu, 24 Mar 2016 18:03:06 +0100 From: =?iso-8859-1?Q?VIGILANT_Luis_Fern=E1ndez?= To: "rsgb_lf_group@blacksheep.org" Thread-Topic: LF: PA working again. No more QRP for now Thread-Index: AQHRhbyCGaAQpB+/T0KKfm2rlAAvz59olT8AgAA9WEw= Date: Thu, 24 Mar 2016 17:03:05 +0000 Message-ID: References: <579355A36AEE9D4FA555C45D556003AB53B5690A@servigilant.vigilant.local>,<56F3F864.7020100@posteo.de> In-Reply-To: <56F3F864.7020100@posteo.de> Accept-Language: es-ES, en-US Content-Language: es-ES X-MS-Has-Attach: X-MS-TNEF-Correlator: MIME-Version: 1.0 X-Scan-Signature: fbdd513523001863775249cfaf215eac Subject: Re: LF: PA working again. No more QRP for now Content-Type: multipart/alternative; boundary="_000_a304df5f390b451597ff17ba3cb01f9cemailandroidcom_" 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: 7469 --_000_a304df5f390b451597ff17ba3cb01f9cemailandroidcom_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi Stefan, MF Not really :-) I use a couple of relais to bypass the PA and make QRP tests. Thrystor cuts= this relais to bypass mode So PA and power supply keep on but without driving. After power off then on= the protecting circuit gets reset and PA go online again Fuse is grown up enought to protect by itself. Seems to be a fuse rule ;-) 73 de Luis EA5DOM Hi Luis, The thyristor will bypass the PA for the rest of the night then? Is it in f= ront of or behind the fuse? :-) Some power supplies may not like the idea. Or do you use a car battery in p= arallel? 73, Stefan Am 24.03.2016 12:01, schrieb VIGILANT Luis Fern=E1ndez: 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 anten= na mismatch and currents over 15A may be. An LM311 and thristor sensing the voltage fro= m 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 --_000_a304df5f390b451597ff17ba3cb01f9cemailandroidcom_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable 
Hi Stefan, MF=0A=
=0A=
Not really :-)=0A=
I use a couple of relais to bypass the PA and make QRP tests. Thrystor cuts=
 this relais to bypass mode=0A=
=0A=
So PA and power supply keep on but without driving. After power off then on=
 the protecting circuit gets reset and PA go online again=0A=
=0A=
Fuse is grown up enought to protect by itself. Seems to be a fuse rule ;-)=
=0A=
=0A=
73 de Luis=0A=
EA5DOM=0A=
Hi Luis,

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

73, Stefan

Am 24.03.2016 12:01, schrieb VIGILANT Luis Fern=E1ndez:
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 ci= rcuit
It was the drain copper track in the PCB that finally burned out prese= rving 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 voltag= e from across the Amp meter
will trigger with this current values and bypass the PA for the rest o= f 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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