Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit.

For instructions on how to compile Qucs from the released source tarball and from the Git repository clone, please refer to the Build Instructions. Official Qucs packages

Topic-related tutorials dealing with certain issues, real life applications and how to handle these with Qucs. The tutorials will be available as pdf files and are written in LaTex.

Qucs releases up to 0.0.10 relied on macromodelling for functional model development via the Qucs schematic interface. This route remains popular amongst most Qucs users because it is easy to understand, is fully interactive and allows straight forward testing of new mod-els.

Qucs 0.0.17 packages are available for Ubuntu versions 13.04 (Raring), 12.10 (Quantal), and 12.04 (Precise). To add the package repository and install Qucs, use the following sequence of commands:

One of the primary aims of the Qucs project is the development of a universal circuit simulator that allows circuit performance to be investigated from DC to microwave frequencies.

The following sections are meant to give an overview about what the Qucs software can be used for and how it is used to achieve this. Qucs is free software licensed under the General Public License (GPL).

Qucs is free software licensed under the General Public License (GPL). It can be downloaded from http://qucs.sourceforge.net and comes with the complete source code.

Following the release of Qucs 0.0.11, and a suitable period of time for new feature debugging, many of the ideas intro-duced in this update will be developed to include OP AMP model building using embedded equations in Qucs schematics.

Qucs is a modern circuit simulation program which attempts to bring together a range of established and emerging circuit simulation technologies to form a "Quite Universal Circuit Simulator".