[AMRadio] Swinging chokes

[Donald Chester]

>     I never used negative lead filtering on my AM rigs because I normally
>grounded the transformer CT, and use two 3B28's in a FW-CT rectifier
>arrangement. I am afraid that a transformer designed to have the CT 
>grounded
>might arc out with negative lead filtering.

I have seen transformers with the CT internally grounded, and others with 
practically NO insulation between CT and ground.  Usually the ones with poor 
CT insulation have two balanced sections of winding, connected together at 
the CT.  If it is just one single continuous winding with a lead brought out 
  at the CT,  there should be no problem.  If the transformer is expendable, 
just hook up and try .  If it is something rare and valuable or 
irreplaceable, be careful.

Don  K4KYV

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