[Amps] Re: matching network

[R.Measures]

>R. Measures wrote:
>>
>>
>>>R. Measures wrote:
>>>>**  In a grounded-grids, tetrode amplifier, c. 75% of the total grid
>>>>current flows in the control grid and c. 25% of the current flows in
>>>>the screen grid.
>>>
>>>We need to be very careful about what we mean by "grounded grids".
>>>
>>>Both grids need to be grounded to RF... but they don't *have* to be both
>>>connected directly to chassis.
>>
>>**  which means?
>
>Which means: "Keep on reading, before typing".
>
>>>
>>>What Rich says is only true if both grids are connected directly to
>>>chassis (and even then, the current division between g1 and g2 will
>>>depend on the mu-g1g2 value for that particular tube).
>>>
>>
>>**  True, but g1-g2 amplification is typically 4 to 5.
>>
>Except when it's 13, for a 4CX350A.

**  Ian --  How does one convert this figure into a determination of how 
grid current divides between the grid and the screen during g-g operation?
>...