[AMPS] re:4-250A

[Rich Measures]

>Rich Measures wrote in reply to G3RZP, who is away from his e-mail for
>most/all of next week:
>>>Rich, there's a body of opinion that doesn't agree with you. For
>>>example, see the curves of IMD against grid volts in The Care and
>>>Feeding of Power Grid Tubes. My copy is the third printing,, and it's on
>>>page 72. ...snip...
>>
>>These curves have nothing to do with grid current.  
>
>These curves apply whether grid current flows or not. The x axis is
>Vg(max)/Vbias, and across most of the graph that quantity is greater
>than 1, ie grid current must be flowing.
>
There seems to be a note regarding "misleading conclusions" for Figure 
44.  

- How many tubes does Eimac recommend for Class AB2 grid-driven linear 
amplifier service?  

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


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