Qucs (Quite Universal Circuit Simulator) is a circuit simulator, which means you can configure a circuit with a graphical user interface (GUI) and simulate the behavior of large signal, small signal, and circuit noise.After the simulation is complete, you can view the simulation results in a display page or window. Qucs is a circuit simulator with a graphical user interface (GUI). Download schematics lite mac for free. Education downloads - Schematics Lite by McCAD™ and many more programs are available for instant and free download. Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface. Download Quite Universal Circuit Simulator 0.0.19 from our website for free. The software lies within Education Tools, more precisely Science Tools. The following version: 0.0 is the most frequently downloaded one by the program users. This free program is an intellectual property of the Qucs team. Qucs.exe is the default file name to indicate.
- Qucs - X 64-bit Download
- Microsoft Qbasic For Windows 10
- Qucs At Arch Linux
- Sourceforge.net › Projects › QucsQuite Universal Circuit Simulator - Browse /qucs-binary At ...
- Qucs Project Download
- Download Circuit Simulation Mac Software. Qucs v.0.0.16 Qucs is a circuit simulator with graphical user interface. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Harmonic Balance analysis, noise analysis, etc. Until now there is no or little user.
- Download Currently QucsStudio supports Windows® only. It runs without installation. Decompressing the archive file creates the directory QucsStudio.It is run by executing QucsStudio/bin/qucs.exe. Download QucsStudio-4.2.2.zip (51 MByte) Changes in the new version: Changelog Sources The source code of ICARUS, GHDL, KiCAD, ADMS, MinGW and Octave can.
Qucs-S: Qucs with SPICE
Download linksThe latest stable release is Qucs-0.0.22. It is based on stable Qucs-0.0.19:
Contibuition guideQucs-S is open for everyone's contribution. See here for contribution guide. | News
| Simulation example with Qucs-S and Ngspice(More screenshots...) PublicationsQucs-S is also a research software. Check our publication list. |
What is Qucs-S?
Qucs-S is a spin-off of the Qucscross-platform circuit simulator. 'S' letter indicates SPICE. The purpose of the Qucs-S subproject is to use free SPICE circuit simulation kernels with the Qucs GUI. It merges the power of SPICE and the simplicity of the Qucs GUI. Qucs intentionally uses its own SPICE incompatible simulation kernel Qucsator.It has advanced RF and AC domain simulation features, but most of the existing industrial SPICE models are incompatible with it. Qucs-S is not a simulator by itself, but it requires to use a simulation backendwith it. The schematic document format of Qucs and Qucs-S are fully compatible. Qucs-S allows to use the following simulation kernels with it:- Ngspice is recommended to use. Ngspice is powerful mixed-level/mixed-signal circuit simulator. The most of industrial SPICE models are compatible with Ngspice. It has an excellent performance for time-domain simulation of switching circuits and powerful postprocessor.
- XYCE is a new SPICE-compatible circuit simulator written by Sandia from the scratch. It supports basic SPICE simulation types and has an advanced RF simulation features such as Harmonic balance simulation.
- SpiceOpus is developed by the Faculty of Electrical Engineering of the Ljubljana University. It based on the SPICE-3f5 code
- Qucsator as backward compatible
Screenshots
- MOSFET power switch
- JFET mixer
- Single-ended tube amplifier
- Hi-Fi bipolar transistor audio amplifier
Main features
- Backward compatible with Qucs by the component types and simulations
- Direct support of SPICE models from components datasheets. SPICE model could be added to schematic without any adaptation.
- Basic SPICE components: RCL, BJT, MOSFET, JFET, MESFET, switches;
- Advanced SPICE components: Equation-defined sources and RCLs, transmission lines;
- Direct support of SPICE Modelcards, SPICE sections (.IC, .NODESET);
- Parametric circuits (.PARAM) and SPICE postrprocessor (Nutmeg)
- Basic SPICE simulations: DC, AC, TRAN;
- Advanced SPICE simulation: DISTO, NOISE, SENS (added in 0.0.20), Spectrum analysis;
- Single-tone and Multitone Harmonic balance analysis with XYCE backend;
- Nutmeg script simulation: direct access to the SPICE code and construct your own simulation;
- XYCE script simulation type;
- XYCE digital devices library;
- XSPICE CodeModel synthesizer;
- User mathematical functions definitions with .FUNC (added in 0.0.20);
Installation
Linux
AppImage for all Linux distributions
You can run Qucs-S on all Linux platforms using AppImage without building it from source. AppImage already includes Qt4 librariesand you don't need to install them explicitly. Simple make AppImage executable and run it from console or your file manager. Pleasenote that AppImage doesn't include Ngspice and you need to install them using system package manager.Debian repository
Debian(7,8, and 9) and Ubuntu(14.04 and 16.04) repositories are available for Qucs-S. Packages arebuilt with automatic Open Build Service (OBS) tool from OpenSUSE team. Go to downloadrepositoryYou need to perform the following steps to add this repository in system (forDebian 9). For othe distributions simple replace the URLs.
- Download GPG key:
wget -c
http://download.opensuse.org/repositories/home:/ra3xdh/Debian_9.0/Release.key - Add the following line to /etc/apt/sources.list:
deb http://download.opensuse.org/repositories/home:/ra3xdh/Debian_9.0/ ./ - Import key and update repos:
apt-key add Release.key
apt-get update - Install Qucs-S
apt-get install qucs-s
*.deb package manually with dpkg:
dpkg -i qucs-s-0.0.19S_amd64.deb
You may need to install the following dependencies: lib4qt4-qt3support,ibqt4-svg, ngspice
RPM packages for CentOS and Fedora
You need to simple add reposotries using the yum package manager. Let's consider example for CentOS:
- First add repository
yum-config-manager --add-repo http://download.opensuse.org/repositories/home:/ra3xdh/CentOS_7/
yum-config-manager --enable ra3xdh - Then check that repository is added
yum repolist alll
- And finally install the qucs-s package
yum install qucs-s
Building from source
If binary packages are not available for your distrubution, then you will need to build Qucs-S from source:- Install all necessary dependencies: Qt, C++ compilers, etc.
- Install desired simulation backends: Ngspice, XYCE, SpiceOpus. You can use all these backends together or only one of them. Install basic Qucs (0.0.18 or newer) if Qucsator is needed.
- Download and unpack tarball
- Use CMake to compile. Autotools doesn't support this installation mode and will not work!
- Invoke make and make install
tar xvfz qucs-s-0.0.21.tar.gz
cd qucs-s-0.0.21
mkdir builddir
cd builddir
cmake ..
make
make install
The last command make install should be executed from root user. It willinstall Qucs-S into default prefix /usr/local/. Use -DCMAKE_INSTALL_PREFIX=... to override the default locationNo additional configure options are needed now.
Slackware SlackBuild
Slack Build script is available for Slackware distribution. It will download andcompile Qucs-S automatically. You will obtain the binary Qucs-S package. Performthe following steps to install Qucs-S:- Clone this repository:
git clone https://github.com/ra3xdh/QucsS.SlackBuild - Run SlackBuild as root:
cd QucsS.S.SlackBuild
./qucs-S.SlackBuild - Install txz package with installpkg command
Windows
You need to use binary installer for Windows. You need to download and installNgspice and/or XYCE manually from official websites: http://ngspice.org/https://xyce.sandia.gov respectively.Important note for Ngspice on Windows: Unpack Ngspice ZIP package strictly to theC:SPICE location. Otherwise XSPICE model will not work! If you are getting strange errors with Ngspice on Windows and cannot ot simulate even simple circuit, please check that Ngspice is installed strictly in C:SPICE . All Ngspice packages including offcial should be installed in a such way.
It's recommended special build of Ngspice-26 for WindowsNgspice26_QucsS.zip. Default Ngspice package also will work but it may have some limitation. CustomNgspice build solves the following issues:
- Windows GUI of Ngspice is disabled. It allows Qucs-S to obtain logs from Ngspice.
- Added CMPP preprocessor and C headers set mandatory for development of CodeModel libraries. Default Ngspice build is shipped without it.
Usage
Linux
Run qucs-s from the the command line or launch Qucs-S icon in your desktopenvironment menu after the installation. You will need to select default simulationbackend at the first run. You can change it later in the application settings.Windows
Launch Qucs-S in the system Start menu. You will also need to select defaultsimulator on the first application start. You will need to set default simulatorat the first run. Correct simulator paths setting is necessary for Windows.Authors
- Vadim Kuznetsov ra3xdh@gmail.com
- Mike Brinson mbrin72043@yahoo.co.uk
Contribution guide
Steps to contribute
Source code of the Qucs-S is hosted at the Github in the following repository: https://github.com/ra3xdh/qucs_s. You need to clone this repository if you wish to contribute.
git clone -b current https://github.com/ra3xdh/qucs_s
cd qucs_s
git checkout -b your_feature
Use CMake to compile Qucs-S. After you make changes, prepare a pull request to Qucs-S repository.
Branching model
Currently there are two main branches in my home Qucs repository:- master is release candidate for the next Qucs-S release. This branch provides side-by-side installation of Qucs and Qucs-S. Main application executable is named to qucs-s. Only CMake is supported.
- current is development branch. Use this branch to target patches. It uses traditional Qucs build system. There may exist some experimental branches forked form this branch. I merge current into master time to time.
Release tarball is obtained from master with some Bash script. I distribute only Qucs-GUI and some utilities with Qucs-S package.
My changes only concentrated on GUI side, and you need to rebuild GUI only to test Qucs-S. You may take Qucsator from usual Qucs installation.
Build instruction (development branches)
For qucs-s-stable you need to set WITH_SPICE cmake key. Autotools will not work. Perform the following commnads to build all: git clone https://github.com/ra3xdh/qucs_s/
cd qucs_s
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/some_path
make
Then install and launch qucs-s executable.(to top...)
Documentation
- Main documentation page at readthedocs.io
- Presentation at the Spring MOS-AK 2016 at Lausanne
- Presentation at the Spring MOS-AK 2017 at Lausanne
- Presentation at the MIXDES2017 conference: Part 1 and Part 2
Publications
Qucs-S is not a simple circuit simulator, but also a research software. Pleasecite our articles, if you are using Qucs-S in your research.- Brinson, M. E., and Kuznetsov, V. (2016) A new approach to compact semiconductor device modelling with Qucs Verilog-A analogue module synthesis. Int. J. Numer. Model., 29: 1070-1088. (BibTeX)
- D. Tomaszewski, G. Głuszko, M. Brinson, V. Kuznetsov and W. Grabinski, 'FOSS as an efficient tool for extraction of MOSFET compact model parameters,' 2016 MIXDES - 23rd International Conference Mixed Design of Integrated Circuits and Systems, Lodz, 2016, pp. 68-73. (BibTeX)
- M. Brinson and V. Kuznetsov, 'Qucs-0.0.19S: A new open-source circuit simulator and its application for hardware design,' 2016 International Siberian Conference on Control and Communications (SIBCON), Moscow, 2016, pp. 1-5. (BibTeX)
- M. Brinson and V. Kuznetsov, 'Improvements in Qucs-S equation-defined modelling of semiconductor devices and IC's,' 2017 MIXDES - 24th International Conference 'Mixed Design of Integrated Circuits and Systems, Bydgoszcz, 2017, pp. 137-142. (BibTeX)
- M. Brinson and V. Kuznetsov, 'Extended behavioural device modelling and circuit simulation with Qucs-S' International Journal of Electronics, 2017, pp.1 - 14 (BibTeX)
Qucs-S: Qucs with SPICE
Download linksThe latest stable release is Qucs-0.0.22. It is based on stable Qucs-0.0.19:
Contibuition guideQucs-S is open for everyone's contribution. See here for contribution guide. | News
| Simulation example with Qucs-S and Ngspice(More screenshots...) PublicationsQucs-S is also a research software. Check our publication list. |
What is Qucs-S?
Qucs-S is a spin-off of the Qucscross-platform circuit simulator. 'S' letter indicates SPICE. The purpose of the Qucs-S subproject is to use free SPICE circuit simulation kernels with the Qucs GUI. It merges the power of SPICE and the simplicity of the Qucs GUI. Qucs intentionally uses its own SPICE incompatible simulation kernel Qucsator.It has advanced RF and AC domain simulation features, but most of the existing industrial SPICE models are incompatible with it. Qucs-S is not a simulator by itself, but it requires to use a simulation backendwith it. The schematic document format of Qucs and Qucs-S are fully compatible. Qucs-S allows to use the following simulation kernels with it:- Ngspice is recommended to use. Ngspice is powerful mixed-level/mixed-signal circuit simulator. The most of industrial SPICE models are compatible with Ngspice. It has an excellent performance for time-domain simulation of switching circuits and powerful postprocessor.
- XYCE is a new SPICE-compatible circuit simulator written by Sandia from the scratch. It supports basic SPICE simulation types and has an advanced RF simulation features such as Harmonic balance simulation.
- SpiceOpus is developed by the Faculty of Electrical Engineering of the Ljubljana University. It based on the SPICE-3f5 code
- Qucsator as backward compatible
Screenshots
- MOSFET power switch
- JFET mixer
- Single-ended tube amplifier
- Hi-Fi bipolar transistor audio amplifier
Main features
- Backward compatible with Qucs by the component types and simulations
- Direct support of SPICE models from components datasheets. SPICE model could be added to schematic without any adaptation.
- Basic SPICE components: RCL, BJT, MOSFET, JFET, MESFET, switches;
- Advanced SPICE components: Equation-defined sources and RCLs, transmission lines;
- Direct support of SPICE Modelcards, SPICE sections (.IC, .NODESET);
- Parametric circuits (.PARAM) and SPICE postrprocessor (Nutmeg)
- Basic SPICE simulations: DC, AC, TRAN;
- Advanced SPICE simulation: DISTO, NOISE, SENS (added in 0.0.20), Spectrum analysis;
- Single-tone and Multitone Harmonic balance analysis with XYCE backend;
- Nutmeg script simulation: direct access to the SPICE code and construct your own simulation;
- XYCE script simulation type;
- XYCE digital devices library;
- XSPICE CodeModel synthesizer;
- User mathematical functions definitions with .FUNC (added in 0.0.20);
Installation
Linux
AppImage for all Linux distributions
You can run Qucs-S on all Linux platforms using AppImage without building it from source. AppImage already includes Qt4 librariesand you don't need to install them explicitly. Simple make AppImage executable and run it from console or your file manager. Pleasenote that AppImage doesn't include Ngspice and you need to install them using system package manager.Debian repository
Debian(7,8, and 9) and Ubuntu(14.04 and 16.04) repositories are available for Qucs-S. Packages arebuilt with automatic Open Build Service (OBS) tool from OpenSUSE team. Go to downloadrepositoryYou need to perform the following steps to add this repository in system (forDebian 9). For othe distributions simple replace the URLs.- Download GPG key:
wget -c
http://download.opensuse.org/repositories/home:/ra3xdh/Debian_9.0/Release.key - Add the following line to /etc/apt/sources.list:
deb http://download.opensuse.org/repositories/home:/ra3xdh/Debian_9.0/ ./ - Import key and update repos:
apt-key add Release.key
apt-get update - Install Qucs-S
apt-get install qucs-s
dpkg -i qucs-s-0.0.19S_amd64.deb
You may need to install the following dependencies: lib4qt4-qt3support,ibqt4-svg, ngspice
RPM packages for CentOS and Fedora
You need to simple add reposotries using the yum package manager. Let's consider example for CentOS:
- First add repository
yum-config-manager --add-repo http://download.opensuse.org/repositories/home:/ra3xdh/CentOS_7/
yum-config-manager --enable ra3xdh - Then check that repository is added
yum repolist alll
- And finally install the qucs-s package
yum install qucs-s
Building from source
If binary packages are not available for your distrubution, then you will need to build Qucs-S from source:- Install all necessary dependencies: Qt, C++ compilers, etc.
- Install desired simulation backends: Ngspice, XYCE, SpiceOpus. You can use all these backends together or only one of them. Install basic Qucs (0.0.18 or newer) if Qucsator is needed.
- Download and unpack tarball
- Use CMake to compile. Autotools doesn't support this installation mode and will not work!
- Invoke make and make install
tar xvfz qucs-s-0.0.21.tar.gz
cd qucs-s-0.0.21
mkdir builddir
cd builddir
cmake ..
make
make install
The last command make install should be executed from root user. It willinstall Qucs-S into default prefix /usr/local/. Use -DCMAKE_INSTALL_PREFIX=... to override the default locationNo additional configure options are needed now.
Slackware SlackBuild
Slack Build script is available for Slackware distribution. It will download andcompile Qucs-S automatically. You will obtain the binary Qucs-S package. Performthe following steps to install Qucs-S:- Clone this repository:
git clone https://github.com/ra3xdh/QucsS.SlackBuild - Run SlackBuild as root:
cd QucsS.S.SlackBuild
./qucs-S.SlackBuild - Install txz package with installpkg command
Windows
You need to use binary installer for Windows. You need to download and installNgspice and/or XYCE manually from official websites: http://ngspice.org/https://xyce.sandia.gov respectively.Important note for Ngspice on Windows: Unpack Ngspice ZIP package strictly to theC:SPICE location. Otherwise XSPICE model will not work! If you are getting strange errors with Ngspice on Windows and cannot ot simulate even simple circuit, please check that Ngspice is installed strictly in C:SPICE . All Ngspice packages including offcial should be installed in a such way.
It's recommended special build of Ngspice-26 for WindowsNgspice26_QucsS.zip. Default Ngspice package also will work but it may have some limitation. CustomNgspice build solves the following issues:
- Windows GUI of Ngspice is disabled. It allows Qucs-S to obtain logs from Ngspice.
- Added CMPP preprocessor and C headers set mandatory for development of CodeModel libraries. Default Ngspice build is shipped without it.
Usage
Linux
Run qucs-s from the the command line or launch Qucs-S icon in your desktopenvironment menu after the installation. You will need to select default simulationbackend at the first run. You can change it later in the application settings.Windows
Launch Qucs-S in the system Start menu. You will also need to select defaultsimulator on the first application start. You will need to set default simulatorat the first run. Correct simulator paths setting is necessary for Windows.Authors
- Vadim Kuznetsov ra3xdh@gmail.com
- Mike Brinson mbrin72043@yahoo.co.uk
Contribution guide
Steps to contribute
Source code of the Qucs-S is hosted at the Github in the following repository: https://github.com/ra3xdh/qucs_s. You need to clone this repository if you wish to contribute.
git clone -b current https://github.com/ra3xdh/qucs_s
cd qucs_s
git checkout -b your_feature
Use CMake to compile Qucs-S. After you make changes, prepare a pull request to Qucs-S repository.
Branching model
Currently there are two main branches in my home Qucs repository:Qucs - X 64-bit Download
- master is release candidate for the next Qucs-S release. This branch provides side-by-side installation of Qucs and Qucs-S. Main application executable is named to qucs-s. Only CMake is supported.
- current is development branch. Use this branch to target patches. It uses traditional Qucs build system. There may exist some experimental branches forked form this branch. I merge current into master time to time.
Release tarball is obtained from master with some Bash script. I distribute only Qucs-GUI and some utilities with Qucs-S package.
Microsoft Qbasic For Windows 10
My changes only concentrated on GUI side, and you need to rebuild GUI only to test Qucs-S. You may take Qucsator from usual Qucs installation.
Qucs At Arch Linux
Build instruction (development branches)
For qucs-s-stable you need to set WITH_SPICE cmake key. Autotools will not work. Perform the following commnads to build all: git clone https://github.com/ra3xdh/qucs_s/
cd qucs_s
mkdir build
cd build
cmake .. -DCMAKE_INSTALL_PREFIX=/some_path
make
Then install and launch qucs-s executable.(to top...)
Documentation
- Main documentation page at readthedocs.io
- Presentation at the Spring MOS-AK 2016 at Lausanne
- Presentation at the Spring MOS-AK 2017 at Lausanne
- Presentation at the MIXDES2017 conference: Part 1 and Part 2
Publications
Sourceforge.net › Projects › QucsQuite Universal Circuit Simulator - Browse /qucs-binary At ...
Qucs-S is not a simple circuit simulator, but also a research software. Pleasecite our articles, if you are using Qucs-S in your research.Qucs Project Download
- Brinson, M. E., and Kuznetsov, V. (2016) A new approach to compact semiconductor device modelling with Qucs Verilog-A analogue module synthesis. Int. J. Numer. Model., 29: 1070-1088. (BibTeX)
- D. Tomaszewski, G. Głuszko, M. Brinson, V. Kuznetsov and W. Grabinski, 'FOSS as an efficient tool for extraction of MOSFET compact model parameters,' 2016 MIXDES - 23rd International Conference Mixed Design of Integrated Circuits and Systems, Lodz, 2016, pp. 68-73. (BibTeX)
- M. Brinson and V. Kuznetsov, 'Qucs-0.0.19S: A new open-source circuit simulator and its application for hardware design,' 2016 International Siberian Conference on Control and Communications (SIBCON), Moscow, 2016, pp. 1-5. (BibTeX)
- M. Brinson and V. Kuznetsov, 'Improvements in Qucs-S equation-defined modelling of semiconductor devices and IC's,' 2017 MIXDES - 24th International Conference 'Mixed Design of Integrated Circuits and Systems, Bydgoszcz, 2017, pp. 137-142. (BibTeX)
- M. Brinson and V. Kuznetsov, 'Extended behavioural device modelling and circuit simulation with Qucs-S' International Journal of Electronics, 2017, pp.1 - 14 (BibTeX)