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• pyspice@conda-forge
• conda-forge/pyspice
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• Ngspice
• Ngspice Bug Tracker
• Xyce of Sandia National Laboratories

Thanks to Discourse, PySpice now has a Forum hosted at https://pyspice.discourse.group

Disclaimer: PySpice is developed on my free time actually, so I could be busy with other tasks and less reactive.

An issue was found with NgSpice Shared, we must setlocale(LC_NUMERIC, "C"); see https://sourceforge.net/p/ngspice/bugs/490/

PySpice is a Python module which interface Python to the Ngspice and Xyce circuit simulators.

The documentation is available on the PySpice Home Page.

Note: This site is hosted on my own infrastructure, if the site seems done, please create an issue to notify me.

Thanks to Discourse, PySpice now has a Forum hosted at https://pyspice.discourse.group

• support Ngspice and Xyce circuit simulators
• support Linux, Windows and Mac OS X platforms
• licensed under GPLv3 therms
• implement an Ngspice shared library binding using CFFI which support external sources
• implement (partial) SPICE netlist parser
• implement an Oriented Object API to define circuit
• export simulation output to Numpy arrays
• plot using Matplotlib
• handle units
• work with Kicad schematic editor
• implement a documentation generator
• provides many examples

Look at the installation section in the documentation.

To make it easier to merge your pull request, you should divide your PR into smaller and easier-to-verify units.

Please do not make a pull requests with a lot of modifications which are difficult to check. If I merge pull requests blindly then there is a high risk this software will become a mess quickly for everybody.

Authors: Fabrice Salvaire and contributors

A huge effort, thanks to @stuarteberg Stuart Berg, has been made to make Ngspice and PySpice available on Anaconda (conda-forge) for the Window, OSX and Linux platforms. Thanks to the conda-forge continuous integration platform, we can now run unit tests and the examples on theses platforms automatically. Hope this will make the software more robust and easier to run !

• PySpice is now available on Anaconda(conda-forge) as well as a wheel on PyPI
• Added a post installation tool to download the Ngspice DLL on Windows and to check the installation. It should now simplify considerably the PySpice installation on Windows.
• This tool can also download the examples and the Ngspice PDF manual.
• On Linux and OSX, a Ngspice package is now available on Anaconda(conda-forge). Note that theses two platforms do not download a binary from Ngspice since a compiler can easily be installed on theses platforms.
• Updated installation documentation for Linux, the main distributions now provide a ngspice shared package.
• Added a front-end web site so as to keep older releases documentation available on the web.
• fixed and rebuilt all examples (but mistakes could happen ...)
• examples are now available as Python files and Jupyter notebooks (but some issues must be fixed, e.g. due to the way Jupyter handles Matplotlib plots)
• support NgSpice 32 API (no change)
• removed @substitution@ in PySpice/__init__.py, beacause it breaks pip install from git
• fixed some logging spams
• fixed NonLinearVoltageSource
• fixed Unicode issue with °C (° is Extended ASCII)
• fixed ffi_string_utf8 for UnicodeDecodeError
• fixed logging formater for OSX (removed ANSI codes)
• reworded "Invalid plot name" exception
• removed diacritics in example filenames
• cir2py has been converted to an entry point so as to work on all platforms
• updated Matplotlib subplots in examples
• added a unit example
• added a NMOS example (thanks to cyber-g) cf. #221

This release is yanked due to broken Windows support.

• fixed nasty issue with NgSpice shared for setlocale(LC_NUMERIC, "C"); cf. #172
• fixed AC AC_MAG AC_PASAE SIN for new NgSpice syntax
• fixed initial_state for VoltageControlledSwitch
• fixed LosslessTransmissionLine #169
• fixed docstrings for element shortcut methods (thanks to Kyle Dunn) #178
• fixed parser for leading whitespace (thanks to Matt Huszagh) #182
• fix for PyYAML newer API
• support NgSpice 31 API (no change)
• added check for CoupledInductor #157
• added check-installation tool to help to fix broken installation
• added pole-zero, noise, distorsion, transfer-function analyses (thanks to Peter Garrone) #191
• added .measure support (thanks to ceprio) #160
• added log_desk parameter to CircuitSimulator
• added listing command method to NgSpiceShared
• added Xyce Mosfet nfin #177

• support Ngspice 30 and Xyce 6.10
• fixed NgSpice and Xyce support on Windows 10
• bug fixes

• Initial support of the Xyce simulator. Xyce is an open source, SPICE-compatible, high-performance analog circuit simulator, capable of solving extremely large circuit problems developed at Sandia National Laboratories. Xyce will make PySpice suitable for industry and research use.
• Fixed OSX support
• Splitted G device
• Implemented partially A XSPICE device
• Implemented missing transmission line devices
• Implemented high level current sources Notice: Some classes were renamed !
• Implemented node kwarg e.g. circuit.Q(1, base=1, collector=2, emitter=3, model='npn')
• Implemented raw spice pass through (see User FAQ)
• Implemented access to internal parameters (cf. save @device[parameter])
• Implemented check for missing ground node
• Implemented a way to disable an element and clone netlist
• Improved SPICE parser
• Improved unit support:
  • Implemented unit prefix cast U_μV(U_mV(1)) to easily convert values
  • Added U_mV, ... shortcuts
  • Added Numpy array support to unit, see UnitValues Notice: this new feature could be buggy !!!
  • Rebased WaveForm to UnitValues
• Fixed node order so as to not confuse users Now PySpice matches SPICE order for two ports elements !
• Fixed device shortcuts in Netlist class
• Fixed model kwarg for BJT Notice: it must be passed exclusively as kwarg !
• Fixed subcircuit nesting
• Outsourced documentation generator to Pyterate
• Updated setup.py for wheel

• Enhanced shared mode
• Shared mode is now set as default on Linux

• Bump version to v1.0.0 since it just works!
• Support Windows platform using Ngspice shared mode
• Fixed shared mode
• Fixed and completed Spice parser : tested on example's libraries

• Fixed Spice parser for lower case device prefix.

• Git repository cleanup: filtered generated doc and useless files so as to shrink the repository size.
• Improved documentation generator: Implemented format for RST content and Tikz figure.
• Improved unit support: It implements now the International System of Units. And we can now use unit helper like u_mV or compute the value of 1.2@u_kΩ / 2@u_mA. The relevant documentation is on this page.
• Added the Simulation instance to the Analysis class.
• Refactored simulation parameters as classes.

• fixed CCCS and CCVS

• fixed ngspice shared

• Added an example to show how to use the NgSpice Shared Simulation Mode.
• Completed the Spice netlist parser and added examples, we could now use a schematic editor to define the circuit. The program cir2py translates a circuit file to Python.

Started project