Many other Spice derivatives, and Qucs and its derivatives. Post simulation, you can view the simulation results on a presentation page or window. So far my pick is QucsStudio for Qucs like simulators and LTspice for Spice like simulators. LTspice is a high performance SPICE simulation software, schematic capture and waveform. Qucs is an integrated circuit simulator that enables you to set up a circuit with its intuitive graphical user interface (GUI) and simulate the small-signal, large-signal and noise behaviour of the circuit. Components models and libraries seems different between Spice and Qucsator engines. For non RF simulations, LTspice is easier to operate and have more parts models when in comparison with Qucs or TINA-TI. microstrip simulation, filters design, Smith charts, etc. QucsStudio has the best GUI, a good set of video tutorials, and what I like most, it has live Sliders (called Tune), look how awesome this feature is (at minute 3:55)! - All Qucs versions have some nice RF goodies e.g. I can't use Qucs-s because in another circuit I need a triac and Qucs-s lacks of some non linear components (see the related issue). In a simple AC generator and R divider circuit, the simulation is stuck at 0. Since 2003 the Qucs Development Team, and other authors, have. I'm having the same issue 4 years later with Qucs 0.0.20 on Ubuntu 20.04. The second Qucs document, called Qucs-S-Help, introduces more advanced simulation and modelling topics. After performing the simulation, the data display. The digital sources S1 and S2 are the inputs, the node labeled as Output is the output. The digital simulation block can be found among the other simulation blocks. Just unzip and run bin/qucs.exe with WINE on Linux, or run the start.bat for Windows. The first of these, simply called Qucs-Help, provides introductory information for beginners and indeed any other users, who require help in starting to use Qucs. Select the digital components in the combobox of the components tab on the left-hand side and build the circuit shown in figure 1. QucsStudio (IMO this is the best Qucs) - has the look of QUCS, it is released as a portable version for Windows only, but it works just fine in Linux with Wine and it is all built with GNU components, but compiled for Windows/MinGW only. Besides Qucs-S, ngspice must also be installed. Usually not in the Linux repositories, has to be compiled or installed manually. Qucs-S (Qucs with Spice) - has the look of QUCS, but the simulation engine is based on SPICE, more precise 'ngspice'. QUCS (Quite Universal Circuit Simulator) - is the one usually found in Linux repositories, and the simulation engine is based on Qucsator, it is not based on SPICE 2. The original project, Qucs is GPLv2+, but QucsStudio is not an open source project anymore, more like Freeware. They are all simulators for electronic circuits, just like LTspice or TINA-TI, but different.
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