[Amps] Fil transformer

[Carl]

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 at me.com>
To: "Radio WC6W" <wc6w_amps at yahoo.com>
Cc: <amps at 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 at 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 at me.com> wrote:
>>
>> Subject: [Amps] Fil transformer
>> To: amps at 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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>>
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