[sdiy] Transistor questions

[Gordonjcp]

On Sun, Mar 02, 2025 at 09:16:13PM -0800, David G Dixon via Synth-diy wrote:
>  
> My question is this: given that the 2N390X transistors have higher
> transition frequencies and lower collector capacitances than the old
> Japanese transistors (according to All Transistors), why should the latter
> give significantly faster saw reset times?  What is the actual figure of
> merit for this?

It's a different model. You could make a model with an infinitely fast reset time, or one that takes ten minutes.

Because it's a simulation it only bears a superficial resemblance to reality.

-- 
Gordonjcp