[Amps] Grounded Screen 4CX1500B

[Ian White G/GM3SEK]

R. Measures wrote:
>> The control grid and cathode are not connected in the 30S-1.
>
>Not connected DC-wise, but for RF, there is virtually no signal 
>potential between the grid and the cathode.

Because G1 receives a small fraction of the anode voltage as negative 
feedback, it moves in the same direction as the instantaneous RF cathode 
voltage, but I think that "virtually no" signal potential" between them 
is overstating it.


-- 
73 from Ian G/GM3SEK
http://www.ifwtech.co.uk/g3sek