QUCS: Project of the Week, June 1, 2015

 The Qucs is one of the featured projects for the week (June 1, 2015), which appear on the front page of SourceForge.net:

 Qucs is a circuit simulator with a graphical user interface. The software aims to support all kinds of circuit simulation types such as, e.g. DC, AC, S-parameter, Transient, Noise, and Harmonic Balance analysis. Pure digital simulations are also supported.
[ Download Quite Universal Circuit Simulator ]

3rd Training Course on Compact Modeling

 3rd TCCM, 

 organized as IEEE EDS Mini-Colloquium 
 (http://eds.ieee.org/lectures.html?eid=136)

Co-organizer: Institute of Electron Technology, Warsaw, Poland
Technical Program Promoter: DMCS, Lodz University of Technology, Łódź, Poland

Date: June 24, 2015.
Place: Hotel Bulwar (Lejda room) ul. Bulwar Filadelfijski 18, 87-100 Toruń, Poland
www: http://www.hotelbulwar.pl

Final schedule of TCCM:
9:00 Wladek Grabinski, Opening
9:10 Henryk Przewłocki, "Weaknesses and corrections of the classical theory of photoelectric phenomena in the MOS system"
10:00 Juin J.Liou, "Compact Modeling of Junction Failure in Semiconductor Devices Subject to Electrostatic Discharge Stresses"
10:50 Coffee break
11:10 Jean-Michel Sallese, "Modeling Junctionless Field Effect Transistors"
12:00 Mike Brinson, "A unified approach to compact device modelling with the open source packages Qucs/ADMS and MAPP/Octave"
13:00 Lunch
14:30 Benjamin Iniguez, "Physically-Based Compact Modeling of GaN HEMT"
15:20 Wladek Grabinski, "Verilog-A Compact Model Standardization"
16:10 Daniel Tomaszewski, "Compact modeling and statistical modeling for parametric yield improvement"
17:00 Wladek Grabinski, Closing

Free And Open Source Simulator Software For Engineers

Free And Open Source Simulator Software For Engineers

0. Qucs
Download Link: http://qucs.sourceforge.net/download.html
Supported OS: Windows, Linux, Mac OSX
License:  Qucs is released under the GPL license and so it is free for free programmers and users !
Qucs stands for Quite Universal Circuit Simulator. So far Qucs is not yet finished, but it is already packed with features. Take a look at the screenshots to get a feel for what it can do.

1. CEDAR
Download Link: http://sourceforge.net/projects/cedarlogic/files/latest/download
Supported OS: Windows
License: Freeware
CEDAR LS is an interactive digital logic simulator to be used for teaching of logic design or testing simple digital designs. It features both low-level logic gates as well as high-level components, including registers and a Z80 microprocessor emulater

2. Logisim
Download Link: http://sourceforge.net/projects/circuit/files/latest/download
Supported OS: Windows, Linux
License: Freeware
Logisim is an educational tool for designing and simulating digital logic circuits. With its simple toolbar interface and simulation of circuits as you build them, it is simple enough to facilitate learning the most basic concepts related to logic circuits.

3. FreeMat
Download Link: http://sourceforge.net/projects/freemat/files/latest/download?source=files
Supported OS: Windows, Linux
License: GPL
FreeMat is a free environment for rapid engineering and scientific prototyping and data processing. It is similar to commercial systems such as MATLAB from Mathworks, and IDL from Research Systems, but is Open Source. FreeMat is available under the GPL license.

4. Logic Gate Simulator
Download Link: http://sourceforge.net/projects/gatesim/files/latest/download
Supported OS: Windows
License: GPL
Logic Gate Simulator is an open-source tool for experimenting with and learning about logic gates. Features include drag-and-drop gate layout and wiring, and user created "integrated circuits".

5. Maxima
Download Link: http://sourceforge.net/projects/maxima/files/latest/download?source=recommended
Supported OS: Windows
License: GPL
Maxima is a fairly complete computer algebra system written in Common Lisp with an emphasis on symbolic computation.

6. Ngspice
Download Link: http://sourceforge.net/project/showfiles.php?group_id=38962
Supported OS: Windows, Linux
License: GPL
Ngspice is a mixed-level/mixed-signal circuit simulator. Its code is based on three open source software packages: Spice3f5, Cider1b1 and Xspice. Ngspice is part of gEDA project, a full GPL'd suite of Electronic Design Automation tools.

7. Qfsm
Download Link: http://sourceforge.net/projects/qfsm/files/latest/download
Supported OS: Windows, Linux
License: GPL
A graphical tool for designing finite state machines

8. QSapecNG
Download Link: http://sourceforge.net/projects/qsapecng/files/latest/download?source=directory
Supported OS: Windows
License: GPL
QSapecNG is a Qt-based symbolic analysis program for linear analog circuits. In fact, it consists of two indipendently parts: the SapecNG framework engine, and the application gui QSapecNG.

[source for 1-8]

DEVSIM is now open source

Juan Sanches of Devsim LLC (Austin, Texas) announced:

DEVSIM is now open source 

The source code for my device simulation software, DEVSIM, is now available for download. The core engine is released under the LGPL 3.0. I hope this software will be useful to the TCAD community and it is available for download from github:

https://github.com/devsim/devsim?goback=.gde_164417_member_223659152

Great. Looks very interesting. A lot of good code. Anyone here by chance has any experience with it?

QucsStudio 1.4.2

A new version of QucsStudio has just been released for general use. The latest version is mainly  bug fixes but does contain a number of new/improved features. A list of the changes are given below:

• some corrections in help system
• component names in noise contribution analysis with subcircuit prefix
• reduced time step warnings in transient analysis
• bugfix: differential voltages in equations
• in equations: allow suffix in node names
• bugfix: directory MinGW\mingw32\bin\ exists again
• bugfix: crash in diagram dialog if clicking on empty variable area
• new component: photodiode
• new equation function: stoa()
• bugfix: spaces allowed between function name and "("
• added InP permittivity in property list
• bugfix: correct text in C++ symbol string
• error message for wrong index in equation variables

This is likely to be one of the last releases in the QucsStudio 1.4 series.  Work has started on QucsStudio series 2.0.0.  QucsStudio 2.0.0 is expected to offer users significant improvements in simulation and modelling capabilities.  The first of the new releases will coincide with the tenth anniversary of the first release of Qucs next year.

QucsStudio can be downloaded from the QucsStudio homepage at http://www.mydarc.de/DD6UM/QucsStudio/qucsstudio.html

Contact: Mike Brinson