[AMPS] floating a filament transformer

R.Measures r at somis.org
Fri Sep 17 12:01:17 EDT 2004


On Sep 17, 2004, at 8:26 AM, jsb at digistar.com wrote:

> On Thu, 16 Sep 2004, R.Measures wrote:
>
>> the choke for the 3-500Zs would need to be wound with #8 gauge wire.
>
> I have been reading with interest about the filament chokes for 3-500Z,
> etc.  In the photos I've seen of projects the filament choke appears 
> to be
> bare wires around the ferrite rod.  Am I seeing this correctly?

Jason --- The Cu wire is insulated with a plastic coating.  Modern 
electric-motor and transformer wire is insulated with silicone varnish. 
  This insulation is so tough that is is usually burned off with a 
propane torch and the ash thereof is removed with steel-wool.
>
>
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org



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