>
>My ARRL handbook gives the following formula for calculating the load
>resistance
>of a vacuum tube power amplifier:
>
> Vp
> Rl = ----
> KIp
>
>where K is 1.5 for class AB, 1.57 for class B, and 2 for class C. I'm not
sure
>how they get this constant, and I wonder if it has anything to do with the
duty
>cycle of the signal being amplified: in other words, I wonder if these
>constants would be different for a CW or voice signal? My guess is probably
>not. Is this correct?
>
yes. My guess is that a more accurate calculation of RL would be based
on peak anode current and peak anode-voltage change.
- later, Vic
Rich...
R. L. Measures, 805-386-3734, AG6K, www.vcnet.com/measures
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