[AMPS] splatter etc

[Rich Measures]

...snip.....
(Mr. Rauch:)
>Someone asked about why tetrodes aren't used. Rich gave a cost 
>example. Let me give a technical reason.

The cost example was PENTODES, Mr. Rauch.  
>
>.......That's 
>why a high MU tube is more stable in a regulator, ...

Does this make sense?  
 'High Mu'  (Mu = 100 to 200) triodes need much grid current--and much 
drive power--in order to draw their maximum rated anode current.   Mu = 2 
triodes, like the 6336, need NO grid current--and NO drive power--in 
order to draw their maximum rated anode current.  Seeing a high Mu triode 
in a regulator is about as likely as seeing a low Mu triode in a G-G RF 
amplifier. ........ If you guessed that all of this relates to the 
question about what types of tubes were used the Class AB1 Triode RF 
amplifiers, congratulations.  
 
>........... It is also more difficult to 
>obtain high efficiency with a pentode .....

Outside the Rauchian World, it is universally acknowledged that pentodes 
are more efficient than tetrodes.  
Rich---

R. L. Measures, 805-386-3734, AG6K   


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