This is the voltage gain of a triode output stage.
As DF96 pointed out, 2.82 is the factor from peak to RMS.
The equation you gave is half the necessary information. It relates voltage gain M to power our when known along with the load resistance.
The second formulae : M=(Emax-Emin)/2Ec1
defines the voltage gain as the ratio of the maximum output voltage divided by twice the input bias voltage on the grid, assuming an idealized condition where there is no grid current flowing at Vgk=0.
From 1 & 2 you can equate output power to voltage gain if you know the load resistance by stating:
2.82 SQRT(PoRl)= M =(Emax-Emin)/2Ec1
Rearanging you get Po=((Emax-Emin)/2Ec1*2.82)^2)/Rl
As DF96 pointed out, 2.82 is the factor from peak to RMS.
The equation you gave is half the necessary information. It relates voltage gain M to power our when known along with the load resistance.
The second formulae : M=(Emax-Emin)/2Ec1
defines the voltage gain as the ratio of the maximum output voltage divided by twice the input bias voltage on the grid, assuming an idealized condition where there is no grid current flowing at Vgk=0.
From 1 & 2 you can equate output power to voltage gain if you know the load resistance by stating:
2.82 SQRT(PoRl)= M =(Emax-Emin)/2Ec1
Rearanging you get Po=((Emax-Emin)/2Ec1*2.82)^2)/Rl
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