AV-BD

Results 2 issues of AV-BD

### Description I'm encountering an issue with `structural_simplify` leading to an "unbalanced system" error when modeling a simple electrical `Pin` with varying voltage and current in ModelingToolkit (MTK). My expectation...

question

Very impressive work! I was wondering, is it possible to couple the system to some other components? It would be **amazing** to be able to connect it to ModelingToolkit I...