[AMPS] Parasitic suppressors/another question,

[Richard W. Ehrhorn]

-----Original Message-----
From:	Rich Measures [SMTP:measures@vc.net]
Sent:	Friday, April 09, 1999 1:43 AM
To:	Amps Reflector
Subject:	Re: [AMPS] Parasitic suppressors/another question,




>
>>>Agreed. Still you can design an HF amp to be unconditionally stable and
>>>test for that condition as well.
>>
>>?  Tuning the HF tank circuit and disconnecting the hf load have
>>virtually nothing to do with what is happening in the anode-resonant
>>circuit where the parasitic oscillations take place.
>
>Ah contrair!  You yourself have said that the anode-resonant circuit is
>composed of Ctune.  Is not Ctune in the tank circuit???
>Sooooooo.......tuning the tank circuit DOES make a difference.
>
?  Adjusting C-tune makes little difference in the anode resonance since
C-tune is effectively in series with C-anode, which is much smaller.

[Richard W. Ehrhorn]  <<< A sweeping generalization which is not 
necessarily true. In many cases - such as big tetrodes tuned by vacuum 
variables - Tune Cmin may be considerably smaller than tube Cout... right?

Cheers, 		Dick >>>

...  SNIP

   later, Jon


Rich...

R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures


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