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Qucs presents a window subdivided in two sections. The main section is an area that houses '''Schematic''' (design window) where you place your electrical components, and '''Data Display''' (simulation window), where you visualize the analytical results. The other section, on the left, has three visualizations mode: '''Components''', '''Contents''' and '''Projects'''. In the Components view, you can navigate between various categories, selecting the drop-down list at the top of its window. If you need a DC Voltage source, '''source'''; a Resistor, Capacitor or Inductance, '''lumped components'''; a diode or a transistor '''non-linear components'''. So if you work in the G-Hz range or in the u-wave sector, select '''Trasmission-Lines'''. | Qucs presents a window subdivided in two sections. The main section is an area that houses '''Schematic''' (design window) where you place your electrical components, and '''Data Display''' (simulation window), where you visualize the analytical results. The other section, on the left, has three visualizations mode: '''Components''', '''Contents''' and '''Projects'''. In the Components view, you can navigate between various categories, selecting the drop-down list at the top of its window. If you need a DC Voltage source, '''source'''; a Resistor, Capacitor or Inductance, '''lumped components'''; a diode or a transistor '''non-linear components'''. So if you work in the G-Hz range or in the u-wave sector, select '''Trasmission-Lines'''. | ||
Drag and drop the components in the Schematic area. Here you can '''Rotate''' the elements and the associated labels, using the context-menu (right clicking on the element) or the buttons at top window, for better placing. | Drag and drop the components in the Schematic area. Here you can '''Rotate''' the elements and the associated labels, using the context-menu (right clicking on the element) or the buttons at top window, for better placing. To edit the element properties double click on it or select the context menu. | ||
To connect the elements, click on the '''Wire''' button, which transforms the mouse punctator in two perpendicular lines. Position and click the mouse on the red circle terminal, and complete the connection: a dashed line previews the connection. To exit from wire-mode de-select the wire button or activate select mode, clicking on the '''Select''' button. | To connect the elements, click on the '''Wire''' button, which transforms the mouse punctator in two perpendicular lines. Position and click the mouse on the red circle terminal, and complete the connection: a dashed line previews the connection. To exit from wire-mode de-select the wire button or activate select mode, clicking on the '''Select''' button. | ||
To begin, create a schematic, like this | Once the schematic is completed, you have to select the type of analysis, form the category '''simulations''' of the Component view: drag & drop the type on the schematic. Edit its properties and run the simulation by clicking the '''Simulate''' button. | ||
To begin, create a schematic, for example like this: | |||
[[Image: Resistenze.png]] | [[Image: Resistenze.png]] | ||
Applying the superposition principle, we have: | |||
Vout = (V1 + V2)*R2/(Rs+R1+R2), where V1=3 V and V2=3*sin(2πft) V. | |||
Revision as of 11:45, 27 July 2010
Qucs: A circuit simulator
Launch Qucs: Applications --> Electronics --> Qucs.
Qucs presents a window subdivided in two sections. The main section is an area that houses Schematic (design window) where you place your electrical components, and Data Display (simulation window), where you visualize the analytical results. The other section, on the left, has three visualizations mode: Components, Contents and Projects. In the Components view, you can navigate between various categories, selecting the drop-down list at the top of its window. If you need a DC Voltage source, source; a Resistor, Capacitor or Inductance, lumped components; a diode or a transistor non-linear components. So if you work in the G-Hz range or in the u-wave sector, select Trasmission-Lines.
Drag and drop the components in the Schematic area. Here you can Rotate the elements and the associated labels, using the context-menu (right clicking on the element) or the buttons at top window, for better placing. To edit the element properties double click on it or select the context menu.
To connect the elements, click on the Wire button, which transforms the mouse punctator in two perpendicular lines. Position and click the mouse on the red circle terminal, and complete the connection: a dashed line previews the connection. To exit from wire-mode de-select the wire button or activate select mode, clicking on the Select button.
Once the schematic is completed, you have to select the type of analysis, form the category simulations of the Component view: drag & drop the type on the schematic. Edit its properties and run the simulation by clicking the Simulate button.
To begin, create a schematic, for example like this:
Applying the superposition principle, we have: Vout = (V1 + V2)*R2/(Rs+R1+R2), where V1=3 V and V2=3*sin(2πft) V.