[AMPS] Re: Variable Screen Voltage!

measures 2@vc.net
Thu, 16 Mar 2000 09:14:37 -0700


>Colin says:
>
>>Any comments about whether this would work.  Since the manufacturer does
>not
>>provide data for this operation, should it not be done.  Is this the 300
>mpg
>>carb that Rich says is impossible?  Since the screen was varied at one
>>point, is it incapable of working? 
>
>If you go back to my favourite work (Pappenfus et al) he goes into this into
>some detail. He says 'tetrode tubes can be used in cathode-driven
>amplifiers. The power gain is considerably higher (than zero bias triodes)
>and is in 20 to 50 region.'

The 30S-1 uses a cathode driven tetrode.   power gain is about 11.  


-  Rich..., 805.386.3734, www.vcnet.com/measures.  
end


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