Load line calculators

[Tubetec]

I found this loadline sim software , Id be interested to hear from others who've used it or if you have any reccomendations for other similar software tools .
http://trioda.com/tools/triode.html
and another here ,
https://www.vtadiy.com/loadline-calculators/power-stage-calculator/
Heres a single EL84 plotted for 220v at the anode , seems accurate enough for the most part . I need to play around with it a bit more to get a feel for it . My C-core output transformer matches 3.5k to 4 and 8 ohms so its definately in the right ball park , I'll be using a set of PMC TB2a's (flying mole amps are gone to ground) with an 8 ohm impedence and 90db@1w sensitivity .

 

[Matador]

I use that site all the time. I wish it would do two things:

1) Let you type in the primary impedance and supply voltage directly, rather than having to adjust the two sliders manually until you get the actual impedance you want.
2) I wish you could set the yellow input sliders, and then have it select the Q point that minimizes distortion.

 

[Tubetec]

Hi Mat ,
I think the Vtady site allows you to fill the primary impedence value .
Maybe theres more of these type calcs around with a better engine .

 

[Walter66]

This site has many tube load lines stored to play and simmulate.
Universal Loadline Calculator