Vadim Kuznetsov

I have recently started the generation of the Flatpak manifest for Qucs-S. I didn't find a way to launch an external application from system `/usr` from the flatpak. Therefore I...

The SPICE entry for the noise sources should be implemented too.

It is impossible to implement Qucs AM source using SPICE. The AM source in Qucs has 3 pins and is controlled by external source, but Ngspice AM source has 2...

Hello Tom, thank you for testing the BSIM models operation with Qucs-S. > ngspice BSIM examples that work using DuSpice /ngspice are not working using Qucs-S Could you point what...

I have found a problem with your BSIMSOI inverter. The device geometries (W and L) are missing for MOS transistors. I suspect that Ngspice will fail if no valid geometries...

I have noticed that the MOSFET geometries (W and L) are also missing for BSIM3 and BSIM6 examples too. This also may cause convergence problem.

> I cannot find examples where the pMOS sub/well/bulk pin in a simple inverter should be connected to VDD/VCC instead of Ground. Every example online seems to connect the pin...

> ngspice has BSIM6/BULK libs/examples/cards but release 37 won't work with them The BSIM >=4 may be disabled for default Ngspice build. You may need to need to rebuild Ngspice...

> I went down the rabbit hole trying to reproduce data from the attached old paper and from examples I found in old Qucs source. The CMOS inverter circuit on...

I have made a bit more investigations. The warning is coming from Ngspice and says that the MOSFET model level 77 is not supported by this build. According the chapter...