No it certainly was not, and it still does not make much sense today (not without hefty optimizations, that is).stratum wrote:I remember that problem from this paper http://www.simulanalog.org/statevariable.pdf
Oddly, it doesn't reference or mention any MNA related paper. Maybe generic realtime circuit simulation wasn't feasible with the CPU's of the day and they didn't even search for it.
About the paper, the method described therein iirc worked fine when I tested it and can be implemented efficiently. The only flaw in my mind is that the paper sort of suggests that standard analysis techniques will fail in some way. Applying KCL actually works fine, however, and using WDF should work as well. So there is quite a few ways to tackle this circuit and get the same result. Anyway it is a very old paper so we should not apply today's standards here and moan too much about it.