On Mon, 21 Jul 97 20:20:06 -0700 Rich Measures <measures@vc.net> writes:
>>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?
According to C&F pg 73 Eimac claims ANY low amplification factor triode
is suitable for AB1 AND AB2 grid driven service.
Thats my .03 for the day.
73...Carl KM1H
>R. L. Measures, 805-386-3734, AG6K
>
>
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