[Amps] A Naive Question...

[Lou Everett, Sr.]

Will one or both of these calculators assist you?  Let me know.

*https://robrobinette.com/Tube_Bias_Calculator.htm
<https://robrobinette.com/Tube_Bias_Calculator.htm>*

*https://eepower.com/tools/power-dissipation-calculator/#
<https://eepower.com/tools/power-dissipation-calculator/#>*

Lou WA5LOU

On Fri, Jan 13, 2023 at 12:00 AM Kim Elmore <cw_de_n5op at sbcglobal.net>
wrote:

> When I look at transmit tube ratings, I see that they're always
> specified in watts, which makes perfect sense because the grid structure
> can dissipate only so much heat before all manner of Bad Things will
> happen. Every amp I've seen measures grid current, and the spec sheets
> specify currents for "typical" operating conditions for the various
> tubes. But... How do I convert grid current to grid dissipation? Do I
> need some kind of grid impedance to do that?
>
> Kim N5OP
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