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Re: [Amps] B&W FC-30 Filament Choke: EPILOGUE

To: <garyschafer@comcast.net>, "'EP Swynar'" <gswynar@durham.net>,<topband@contesting.com>, <amps@contesting.com>
Subject: Re: [Amps] B&W FC-30 Filament Choke: EPILOGUE
From: "Van K7VS" <wa7fab@cdsnet.net>
Date: Sun, 4 Mar 2007 10:19:37 -0800
List-post: <mailto:amps@contesting.com>
I HAVE A B&W 15A FILAMENT CHOKE FOR SOMEONE IF THEY NEED IT FOR $25.00 
INCLUDING SHIPPING IF THEY LIKE.  (THE $20.00 PRICE REFLECTS STORAGE FEES 
ONLY FOR THE LAST TWENTY YEARS OR SO!  VAN, k7vs
----- Original Message ----- 
From: "Gary Schafer" <garyschafer@comcast.net>
To: "'EP Swynar'" <gswynar@durham.net>; <topband@contesting.com>; 
<amps@contesting.com>
Sent: Sunday, March 04, 2007 7:33 AM
Subject: Re: [Amps] B&W FC-30 Filament Choke: EPILOGUE


>
>
>> -----Original Message-----
>> From: amps-bounces@contesting.com [mailto:amps-bounces@contesting.com] On
>> Behalf Of EP Swynar
>> Sent: Sunday, March 04, 2007 7:56 AM
>> To: topband@contesting.com; amps@contesting.com
>> Subject: [Amps] B&W FC-30 Filament Choke: EPILOGUE
>>
>> I've always been curious as to the possible effectiveness of employing 
>> the
>> ferrite core from a TV picture tube deflection yoke / coil assembly as 
>> the
>> foundation for a robust torroid-type filament choke...I have an
>> inordinately LARGE example of one here, which was removed from a junked
>> early colour TV set many years ago: maybe this is an opportunity in
>> disguise, waiting to be realized...
>>
>> I have no knowledge of anyone ever having tried this latter trick, but I
>> can't see why it wouldn't work.
>>
>> ~73~ Eddy VE3CUI - VE3XZ
>
> I have a pair of 813's in GG that I built many years ago and I built a
> filament choke from a TV flyback core. It works fine. If I remember right 
> I
> cut the ends off one of the C sections to make a straight bar. You could
> glue 2 sections together to make a longer one if needed too.
>
> It seems to me that there was an article or two on using these things in 
> one
> of the ham magazines years ago. Maybe in the 60's??
>
> 73
> Gary  K4FMX
>
>
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>
>
> -- 
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> 1:58 PM
>
> 

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