OrangeSwarm

Qucs is a free circuit simulator for Windows, Linux and Mac. It comes complete with a schematic editor, project manager and other useful tools. Qucs is very easy to use and supports the standard DC, AC, parameter sweep, transient, digital and other simulations. It also includes a selection of popular component models. Qucs can display the simulation data in a number of ways such as Cartesian Plot, Polar, Tabular, Smith Chart, Timing Diagram and Truth Table.

Installing

First open the terminal and type the following:

cd ~

wget -t5 http://downloads.sourceforge.net/project/qucs/qucs/0.0.15/qucs-0.0.15.tar.gz?use_mirror=kent

This will download the latest version of Qucs, once that is done you will need to extract it:

tar -xvzf qucs-0.0.15.tar.gz

If you want to delete the Qucs source archive you can do so by using this, if not skip this next command.

rm qucs-0.0.15.tar.gz

Now you need to move the folder to where you want to compile it, if you don’t mind it being in your home folder skip this:

sudo mv qucs-0.0.15 /usr/src

cd /usr/src/qucs-0.0.15

Next move into the folder and download the dependencies required to compile Qucs:

cd qucs-0.0.15

sudo apt-get install libqt3-headers

Finally you can compile Qucs:

./configure

make

sudo make install

Once this is done (hopefully without any errors) you can run Qucs simply by typing:

qucs

That’s all, although I’d suggest adding a shortcut to your menu.