To: rsgb_lf_group@blacksheep.org
Date: Sun, 30 May 2010 14:40:35 +0200 (CEST)
Message-ID: <179954888.4829041.1275223235751.JavaMail.fmail@mwmweb035>
MIME-Version: 1.0
From: =?ISO-8859-15?Q?Horst_St=F6cker?= <horst.stoecker@web.de>
In-Reply-To: <20100530.082855.1608.1.riese-k3djc@juno.com>
References: <20100530.082855.1608.1.riese-k3djc@juno.com>
Importance: normal
Sensitivity: Normal
Subject: Re: LF: 8.97kc - TV transformer info needed
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: quoted-printable
Sender: owner-rsgb_lf_group@blacksheep.org
Precedence: bulk
Reply-To: rsgb_lf_group@blacksheep.org


A torroidal transformer works on VLF. I had one (220 to 15 V) in use after=
 my audio transformer was blown. But the TV transformer brings the higher=
 voltage of course.
Horst DO1KHS/DI2AN

-----Urspr=C3=BCngliche Nachricht-----
Von: riese-k3djc@juno.com
Gesendet: 30.05.2010 14:18:42
An: rsgb_lf_group@blacksheep.org
Betreff: Re: LF: 8.97kc - TV transformer info needed

>
>I need to look around for an old tube TV for the same thing
>
>Just wondered how well a neon sign transformer would work.
>back in the days I used a pair of HV transformers
>back to back as a modulation transformer which appeared to work as=20
>well as one designed for that. so it passed good audio up to 3Khz at
>least
>I also use a standard transformer in a LF converter which works=20
>well up to 200 Khz or so. The point being would an iron core transformer
>work in low power tests at elf ?=20
>
>Bob K3DJC=20
>
>
>On Sat, 29 May 2010 21:48:48 -0500 "Mike.WE0H" <we0h@gmx.com> writes:
>> Found my Zenith black & white TV chassis tonight. Got a flyback=20
>> transformer that looks like Litz wound with bees wax for potting=20
>> compound. No diodes, lots of room for the primary winding that I=20
>> need to=20
>> wind yet. Should be good to go now for some 8kc experiments.
>>=20
>> Thank you everyone for the advice on the transformers today. Now I=20
>> have=20
>> the correct one on my bench.
>>=20
>> Mike
>> WE0H
>>=20
>>=20
>>=20
>
>____________________________________________________________
>Get Free Email with Video Mail & Video Chat!
>http://www.juno.com/freeemail?refcd=3DJUTAGOUT1FREM0210
>
___________________________________________________________
NEU: WEB.DE DSL f=C3=BCr 19,99 EUR/mtl. und ohne Mindest-Laufzeit!
http://produkte.web.de/go/02/