[Amps] Alpha 77Dx -Adding Grounded Grid Filament Choke

[R.Measures]

On Mar 5, 2005, at 5:23 PM, Tony King - W4ZT wrote:

> Tomm,
>
> I believe that what Rich is saying here is that we should treat the
> GS-35B just as though it were a directly heated cathode when dealing
> with the question of protection for the cathode and heater circuit.  A
> bifiler choke with a center tapped filament transformer

Even though a CT filament winding is required for 
filament-type/directly-heated-cathode tubes, I don't see the necessity 
for heater-type/indirectly-heated-cathode tubes since the heater 
potential is not in the signal path like it is in filament-type tubes.
...
> ... ... ...

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org