Qucs, briefly for Quite Universal Circuit Simulator, is a circuit simulator with graphical user interface (GUI). The GUI is based on Qt® by Digia ®. The software aims to support all kinds of circuit simulation types, e.g. DC, AC, S-parameter, Harmonic Balance analysis, noise analysis, etc.

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 The following packages are currently maintained by the Qucs team.

tutorials about how to use Qucs 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.

Both the SPICE to Qucs and OP AMP tutorials7 outline in detail the steps required to merge circuit design and simulation in this way. This modelling route is a very important and powerful model development tool. So much so that ongoing tests to identify how compatible Qucs is with the industrial standard SPICE 2g6 and 3f5

To add the package repository and install Qucs, use the following sequence of commands: sudo apt-add-repository ppa:qucs/qucs sudo apt-get update sudo apt-get install qucs Install instructions for Windows

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). It can be downloaded from http://qucs.sourceforge.net and comes with the complete source code.

6.10 Digital component propagation time delays and transient simulation numerical stability. . . . . . . . . . . . . . . . . . . . . . . . . . .173

tutorial concentrates on models that can be simulated using Qucs release 0.0.9. The Qucs built-in operational ampli er model Qucs includes a model for an ideal operational ampli er.

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".