[Amps] Fil transformer

[Merv Schweigert]

How about the old time trick of putting two low value resistors to 
ground, one from each side of the
filament,  used to be used for a center tap many times in days of old.


> 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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