tomhajjar

Results 44 issues of tomhajjar

ngspice BSIM examples that work using DuSpice /ngspice are not working using Qucs-S. Two issues came up: 1. BSIM4_prj - BSIM4 files work using ngspice but under Qucs-S produce "Alberto...

Qucs-S and Qucs is using the symbol for depletion mode MOSFET when placing an enhancement mode MOSFET onto the schematic. The symbol is correct in the left component or library...

qt5

Previously I asked about having the correct Spice symbols for N/P enhancement and depletion power MOSFETs with 3 pins, (D-G-S) to match up with Spice models provided by manufacturers. The...

new feature
ngspice

If I want to cut or copy more than one item, I must use the Edit menu. If I select a group of items, as soon as I try to...

Is a potentiometer in a future release? Since log or alternate taper pots are pretty much gone today a simple linear one would suffice. The ability to alter resistance via...

question

Is there a reason Qucs-S won't do a simple DC operating point (.op)? Qucs does it and I assume ngspice will do it as well. If I add say a...

new feature
ngspice

As an exercise I ran some simulations using 4 different 555 timer models. I used the DuSpice GUI to confirm all worked with ngspice. Only 1 model (UA555.lib) worked when...

ngspice

During some vacuum tube amplifier modeling, the tube model 6V6.sch based on 6V6.lib is causing Qucs-S 1.0.0 and 0.0.24 to abruptly close without generating any files when I try to...

bug

I'm getting weird results trying to "port" a Qucs Varactor simulation over to Qucs-S. I want to use "Varactor_Model.sch" in circuits. I used the built in varactor model for debugging....

bug
ngspice
RF

Gmail and Yahoo blocked me from sending you this attachment for the email I sent earlier. Email text: I did more work on the BSIM example projects. Strangely I cannot...

bug