Return-Path: Received: from mtain-mi08.r1000.mx.aol.com (mtain-mi08.r1000.mail.aol.com [172.21.131.166]) by air-db04.mail.aol.com (v129.4) with ESMTP id MAILINDB042-861e4c025002351; Sun, 30 May 2010 07:46:11 -0400 Received: from post.thorcom.com (post.thorcom.com [193.82.116.20]) by mtain-mi08.r1000.mx.aol.com (Internet Inbound) with ESMTP id 5CA93380000B0; Sun, 30 May 2010 07:46:09 -0400 (EDT) Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1OIgxI-0001EO-JJ for rs_out_1@blacksheep.org; Sun, 30 May 2010 12:45:24 +0100 Received: from [193.82.116.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1OIgxH-0001E4-MU for rsgb_lf_group@blacksheep.org; Sun, 30 May 2010 12:45:23 +0100 Received: from mail-wy0-f171.google.com ([74.125.82.171]) by relay1.thorcom.net with esmtp (Exim 4.63) (envelope-from ) id 1OIgxE-0004FT-Op for rsgb_lf_group@blacksheep.org; Sun, 30 May 2010 12:45:23 +0100 Received: by wyb40 with SMTP id 40so1530338wyb.16 for ; Sun, 30 May 2010 04:45:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:sender:received :in-reply-to:references:date:x-google-sender-auth:message-id:subject :from:to:content-type; bh=YVAfDAoDSXuajHV+84u6ESQgpGNKAEyoYhFhtQcxioQ=; b=ZDe6Ave7ar3NQFB2fFnyXe8R8IFh04zGiZ5tO8ldH5mt860IbxjjCX27kYF3M0P2b7 7iI/gLJBsl5HynWLFkNWFGnhJRp49KFc39QQk0iGOLNQ67N9AW27piXlqJNqyWLIaKVg 3wKXyG5aPvcdDOB6hKFX4wkvW4i8SiQqIdWvk= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:content-type; b=kK8Qe4aNmuHlmbH9Yxp575iWSeRPoZq0+xfvabmGlRZoR5mDD4I/9yISwSUky0JV4r 3McuMzvOgiT8XneEnRKQWgByzcAyeRmUxOaLHnWrwF1AvVT7aoU/zFvXl9Jn15qssgKC VGLOjYF5uplh8ej05/Znl7UeS3OgARG90EPm8= MIME-Version: 1.0 Received: by 10.227.142.73 with SMTP id p9mr2793879wbu.65.1275219914002; Sun, 30 May 2010 04:45:14 -0700 (PDT) Received: by 10.216.185.212 with HTTP; Sun, 30 May 2010 04:45:13 -0700 (PDT) In-Reply-To: <791676515.4795360.1275219370867.JavaMail.fmail@mwmweb035> References: <20100529.131558.1388.0.riese-k3djc@juno.com> <4C01F945.9030801@gmx.com> <272601324.4759587.1275215309363.JavaMail.fmail@mwmweb035> <4C024A3E.21037.1511A76@dave.davesergeant.com> <791676515.4795360.1275219370867.JavaMail.fmail@mwmweb035> Date: Sun, 30 May 2010 12:45:13 +0100 X-Google-Sender-Auth: 37cJI_OqiF3u8k5boHmgVnMFnzY Message-ID: From: Gary - G4WGT To: rsgb_lf_group@blacksheep.org DomainKey-Status: good (testing) X-Spam-Score: 0.0 (/) X-Spam-Report: autolearn=disabled,HTML_MESSAGE=0.001 Subject: Re: LF: Re: 8.97kc - fuse for TV transformer Content-Type: multipart/alternative; boundary=001485f7244cfc110b0487ce458d 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 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-global-disposition: G X-AOL-SCOLL-AUTHENTICATION: mail_rly_antispam_dkim-m237.1 ; domain : gmail.com DKIM : fail x-aol-sid: 3039400cded04c02500139b0 X-AOL-IP: 193.82.116.20 X-Mailer: Unknown (No Version) --001485f7244cfc110b0487ce458d Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Horst, LF, I used TV line output transformer & scan coil yoke cores in my early days= of LF 136 kHz operation. Of course the existing winding was removed & rewound to suit. Results were quite good at low to medium power. 73 Gary - G4WGT. On 30 May 2010 12:36, Horst St=F6cker wrote: > The problem is the secondary winding, of course. My primary is just woun= d > and will surely have survived when the seconary is "a molten blob". > Horst DO1KHS/DI2AN > > -----Urspr=FCngliche Nachricht----- > Von: Dave Sergeant > Gesendet: 30.05.2010 13:21:34 > An: rsgb_lf_group@blacksheep.org > Betreff: LF: Re: 8.97kc - fuse for TV transformer > > >On 30 May 2010 at 12:28, Horst St=F6cker wrote: > > > >> some minutes before it did a weak click. Shock: Have I blowen the TV > >> transformer. Good luck, it was just the fuse of my PA. No problem. Bu= t I > >> possibly should add a fuse to my TV transformer. Does anybody know ho= w > >> many A the transformer will take? Horst DO1KHS/DI2AN > > > >It should be borne in mind that all these types of LOPT's are now > >antiques. Split Diode type line output transformers have been universal > >in TVs and monitors for the last 25-30 years. So you are really on your > >own as far as data or reliability are concerned. > > > >A normal TV LOPT will be working with a peak feed current to the > >primary of around 400mA. Anything more than that and you will soon have > >a molten blob. In the age when these kinds of transformers were used, > >usually with an external tripler, they were very much the weak link in > >sets and were failing all the time. > > > >73 Dave G3YMC > > > >http://www.davesergeant.com > > > > > ___________________________________________________________ > GRATIS f=FCr alle WEB.DE Nutzer: Die maxdome Movie-FLAT! > Jetzt freischalten unter http://movieflat.web.de > > --001485f7244cfc110b0487ce458d Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Horst, LF,

I used TV line output transformer & scan= coil yoke cores in my early days of LF 136 kHz operation. Of course the= existing winding was removed & rewound to suit. Results were quite go= od at low to medium power.

73

Gary - G4WGT.

On 30 May 2010 12:36, Horst St=F6cker <horst.stoecker= @web.de> wrote:
The problem is the secondary winding, of= course. My primary is just wound and will surely have survived when the= seconary is "a molten blob".
Horst DO1KHS/DI2AN

-----Urspr=FCngliche Nachricht-----
Von: Dave Sergeant <dave@daves= ergeant.com>
Gesendet: 30.05.2010 13:21:34
An: rsgb_lf_group@blackshe= ep.org
Betreff: LF: Re: 8.97kc - fuse for TV transformer

>On 30 May 2010 at 12:28, Horst St=F6cker wrote:
>
>> some minutes before it did a weak click. Shock: Have I blowen the= TV
>> transformer. Good luck, it was just the fuse of my PA. No problem= . But I
>> possibly should add a fuse to my TV transformer. Does anybody kno= w how
>> many A the transformer will take? Horst DO1KHS/DI2AN
>
>It should be borne in mind that all these types of LOPT's are now<= br> >antiques. Split Diode type line output transformers have been universa= l
>in TVs and monitors for the last 25-30 years. So you are really on you= r
>own as far as data or reliability are concerned.
>
>A normal TV LOPT will be working with a peak feed current to the
>primary of around 400mA. Anything more than that and you will soon hav= e
>a molten blob. In the age when these kinds of transformers were used,<= br> >usually with an external tripler, they were very much the weak link in=
>sets and were failing all the time.
>
>73 Dave G3YMC
>
>http://www.d= avesergeant.com
>
>
___________________________________________________________
GRATIS f=FCr alle WEB.DE= Nutzer: Die maxdome Movie-FLAT!
Jetzt freischalten unter http://movieflat.web.de


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