[Amps] figuring tube output impedance

[Steve Thompson]

Conrad_G0RUZ wrote:
> I would NOT run 3.9 kV on a GU84b, that is way too high, I have used the
> GU78B and I wouldn't run that much HT on a GU78B and it is a considerably
> better tube.
> 
> Look at this http://www.nd2x.net/gu84b.html . I would go for an RL of around
> 650-700 ohms for a GU84B with 2.2kV @ 2 amps.

A pedantic comment, highlighted in Conrad's reply. The output impedance 
of the tube isn't of major importance here. It's the load impedance 
presented to it that matters. The two are not the same.

Steve