"Improved vacuum tube models for SPICE simulations" https://normankoren.com/Audio/Tubemodspice_article.html

The intractability of the Triode is part of the reason why the Pentode exists. And, you will note, the Pentode curves in certain modes looks a lot like your bog standard MOSFET.

This also discusses how the "constants" ... well, aren't. https://www.john-a-harper.com/tubes201/

With that said, a N type JFET is not a bad start. The main rules of thumb work: The grid draws negligible current. The tube will pass enough current from plate to cathode, to maintain a roughly constant cathode voltage above the grid.

But tubes aren't current amplifiers, they're voltage amplifiers, like FETs.

You can look at the "characteristics curves" of tubes (plate curves and transconductance curves), which tell the story of current against plate-to-cathode voltages for fixed grid voltages.

Gives overview equations for MOSFET device simulations which are probably sufficient for most purposes in Section 3.5, and COMPLETE mathematical descriptions of the SPICE MOSFET implementation in Appendix A.3. Not for the weak.

I mean just in general it makes the web less awful. Webpages are so much easier on the eyes without all the crap they try to stuff in there.

And it can prevent malware, especially for those less tech-inclined.

And it means you use less data/bandwidth, since the blocker prevents the request from ever being made in the first place.

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