Might as well do a dbx too while you're at it.I've been working on some more R&D type tasks, switching over my circuit solver to be able to take the netlist output of LTSpice as its input. This means I can simulate a circuit using LTSpice, then with a few additional Cytomic specific directives that I add like other spice directives inside the LTSpice schematic, I can also generate c++ code to simulate the same circuit. This has taken pretty much all of the last month, and the work is only just completed. This means I can input much larger circuits more easily without error, since I can quickly simulate them in LTSpice to make sure things are working before then running my solver on the same netlist and checking my results back to LTSpice.... Unrelated but what have you been up to? It's been a minute.
I've also had a breakthrough in sorting out a much more stable algorithm to guide the convergence steps when solving pn-junctions. My old method was a bit brittle and required lots of fine tuning to get it to work, and it couldn't handle the full input voltage range. Now I've got a method which is looking very stable and hopefully very general that will hopefully work without fine tuning for different circuits. Every diode and every transistor has pn-junctions, so they are really important to solve well. This is also critical for a good discrete Blackmer gain cell for the VCA of The Glue v2:
https://en.wikipedia.org/wiki/Blackmer_gain_cell
Statistics: Posted by jtsterays — Thu Feb 20, 2025 1:08 pm