On Nov 7, 2005, at 2:30 PM, Ian White G/GM3SEK wrote:
> 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.
. If there was much grid-cathode signal, there would be more gain than
is extant. I'll wager a pint of Guinness that there is less than 2V of
signal between the cathode and the grid at full tilt.
>
>
> --
> 73 from Ian G/GM3SEK
> http://www.ifwtech.co.uk/g3sek
> _______________________________________________
> Amps mailing list
> Amps@contesting.com
> http://lists.contesting.com/mailman/listinfo/amps
>
>
Richard L. Measures, AG6K, 805.386.3734. www.somis.org
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|