Il 05/12/23 15:33, Jacob Møller ha scritto:
Thanks for the interesting discussion on analog modelling.
I am also trying to model some tube circuits, can you guys help me
with understanding how to model this tube in LTSpice?? Thanks 🙏
To me it is a 12AX7 with 11V DC connected to the heater. Do you think
I am correct?
I don't know if that's a 12AX7, but when it comes to modeling there's a
ton of tube models to choose from around.
IMHO the most accurate so far is Cardarilli's [1] and the cheapest with
decent accuracy (excluding grid current) is "ours" [2] - you could also
use the grid current model from [1] in [2].
Actually, AFAIK, none of the published models models grid current well,
and I also suspect that it changes substantially between manufacturers
of the same tube type.
Best,
Stefano
[1] G. C. Cardarilli, M. Re, and L. Di Carlo, "Improved Large-Signal
Model for Vacuum Triodes", 2009 IEEE Symposium Circuits and Systems.
[2] R. Giampiccolo, S. D'Angelo, A. Bernardini, and A. Sarti, "A Quadric
Model of Vacuum Tubes for Virtual Analog Applications", DAFx-23.
