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A dialogue opens which allows the resistor value to be changed enter 100 Ohm in the edit field on the right hand side and click enter. To edit the parameters of the second resistor, double-click on it. The icon requesting DC simulation is listed in the simulations group. The ground symbol can be found in the lumped components group or selected from the Qucs toolbar. The independent DC voltage source is located in the sources group.
Repeat this process for all components shown in Figure 3. Similarly, pressing the left mouse button places the component onto the schematic at the place the mouse cursor is pointing at. Pressing the right mouse button rotates the Resistor symbol. Next move the mouse cursor into area (6). Choose components group lumped components and click on the first symbol: Resistor. This action causes a combo box to be displayed from which a component group may be choosen and the required components selected. The circuit illustrated is a two resistor voltage divider network connected to a fixed value DC voltage source. Enter firstSchematic, or some other suitable name, and click on the OK button to complete the save sequence.Īs a first example to help you get started with Qucs enter and run the simple DC circuit shown in Figure 3. To complete the save sequence the program will request the name of your new document. This step initiates a sequence which saves the document displayed in area (6). To save an open document click on the save button (or use the main menu: File Save). The left tabular bar is then switched to Content, and the content of the currently opened project displayed. On creation a new project is immediately opened and it’s name displayed on the Qucs window title bar. Every file belonging to this new project is saved within the QucsHelpFig_prj directory. In the example shown in Figure 3 this is called QucsHelpFig_prj. Qucs then creates a project directory in the ~/.qucs directory. Enter the name of a Qucs project in the box provided, for example enter QucsHelpFig and click on the OK button. This action causes a Qucs GUI dialogue to open. To enter a new project left click on the New button located on the right above window (1). However note, when Qucs is launched for the first time the Projects list is empty.įigure 3 - Qucs main window with working areas labelled After running Qucs, the Projects tab is activated. On the left hand side of the Qucs main window is a third area labelled (1) whose content depends on the status of Projects (2), Content (3), Components (4) or Libraries. Clicking, with the left hand mouse button on any of the entries in the tabular bar labelled (5) allows users to quickly switch between the currently open documents. This window is used for displaying schematics, numerical and algebraic model and circuit design data, numerical output data, and signal waveforms and numerial data visualised as graphs, see Figure 3. On launching Qucs a working area labelled (6) appears at the centre of the GUI.
#FORMULAS EN QUCS CODE#
Complete, with appropriate entries for your Qucs installation, the Settings, Source Code Editor, File Types and Locations menus.
Clicking on Application Settings causes the EditQucsProperties window to be displayed, see Figure 2. This is done from the File Application Settings menu.
#FORMULAS EN QUCS SOFTWARE#
After Qucs has been launched, the software displays a Graphical User Interface window (GUI) similar, or the same, to the one shown in Figure 1.īefore using Qucs it is advisable to set the program application settings. qucs directory or in one of it’s sub-directories. All files involved in Qucs simulations are saved in the. When Qucs is launched for the first time, it creates a directory called. This section of the Qucs-Help document introduces readers to the basic steps involved in Qucs analogue circuit simulation. Qucs is a scientific/engineering software package for analogue and digital circuit simulation, including linear and non-linear DC analysis, small signal S parameter circuit analysis, time domain transient analysis and VHDL/Verilog digital circuit simulation. Getting Started with Qucs Analogue Circuit Simulation ¶
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