In experimenting with the Qucs ideal library I found the Diff and Int functions didn’t work so I reconstructed schematics to debug them. The schematics didn’t work in Qucs or QucsStudio but do work in Qucs-S and LTSpice.
I realize theĀ functions are not realistic and the data they produce is suspect but I was wondering why I couldn’t get QucsStudio to work regardless of the integration method I chose.
Attached is the Diff schematic