Digital Components (NAND, NOR, flip flops, 555 Timer...)

[Frooxius]

Hello!

First great job on this library! It's very clean and extensive.

I wanted to ask if there's any plans to add direct support for a number of digital components - from various logical gates to more complex circuits, like the 555 Timer? Or is this better handled by finding a schematic and creating a subcircuit for those?

For context, I've been working with this library: https://github.com/Mervill/SharpCircuit which allows to timestep circuits for interactive simulation. I found how to do this with SpiceSharp using the Transcient simulation (I would prefer to use this library, since it seems a lot more robust and up to date), but it is missing a number of components like this and I'm not quite sure what is the proper way to handle them.

[svenboulanger]

Hi,

I seem to have missed this post, so sorry for the late reply.

At the moment there is no direct support for digital components, although I already added some preparations for it. "Just anything will do" is probably fairly straight-forward, but considering the nature of the project I do worry about timing accuracy, simulation stability and modeling of digital outputs - which is a bit harder to formalize.

We are working on a Verilog simulator that would hopefully run alongside Spice# at some point, but this is still future talk.

If you want to simulate logical gates, then you can probably use things that are already available (most gates are implemented using transistors anyway). But if I understand correctly then I believe you want to have acceptable simulation times even for more complex digital logic, in which case Spice# will not be able to fill your needs in the near future.

Yours sincerely,
Sven