Re: [Amps] Fil transformer

["Carl" <km1h@jeremy.qozzy.com>]

You can do the same thing with a pair of 10 Ohm resistors and create a 
virtual CT.
Carl


----- Original Message ----- 
From: "Kelly Taylor" <ve4xt@me.com>
To: "Radio WC6W" <wc6w_amps@yahoo.com>
Cc: <amps@contesting.com>
Sent: Thursday, August 10, 2017 11:47 AM
Subject: Re: [Amps] Fil transformer


> Hi Russ,
>
> Thanks. Just to be clear, I do not require a transformer for providing 
> filament power: it's to fix a design flaw in the Clipperton L, which lacks 
> a centre tap for the filament windings and instead feeds the filaments 
> with RF on one side only, introducing hum.
> The fix is to parallel a centre-tapped 6v transformer secondary with the 
> filament windings on the main transformer and move the RF input to the new 
> centre tap.
> The Hammond 166j6 is ideal, as it can be added with no metalwork, and you 
> simply cut off and tape the primary windings.
>
>
> 73, kelly, ve4xt,
>
>
> Sent from my iPhone
>
> > On Aug 10, 2017, at 11:33, Radio WC6W <wc6w_amps@yahoo.com> wrote:
> >
> > Hi Kelly,
> >    I have a Stancor P-6134 that should do for that.
> >
> >    http://qsl.net/wc6w/wc6wfsw/index.html?fr36.html
> >
> >    Though shipping to Canada may be a dealbreaker.
> >
> > 73 & Good morning,
> >   Marv WC6W 310 649 3111
> >
> >
> >
> > --------------------------------------------
> > On Wed, 8/9/17, Kelly Taylor <ve4xt@me.com> wrote:
> >
> > Subject: [Amps] Fil transformer
> > To: amps@contesting.com
> > Date: Wednesday, August 9, 2017, 11:35 AM
> >
> > Hi all,
> >
> > Seeking a six-volt filament
> > transformer. Must be centre-tapped. To fix the AC hum
> > problem on my Clipperton L.
> >
> > Must be about the size of a Hammond
> > 166j6, about 3 inches wide (to fit without metalwork).
> >
> > If you have something, let me know. If
> > I can't find what I need used, will just buy new from
> > Mouser.
> >
> > 73, kelly, ve4xt
> >
> > Sent from my iPhone
> > _______________________________________________
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> > Amps@contesting.com
> > http://lists.contesting.com/mailman/listinfo/amps
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