When teaching theoretical electrical engineering, much attention is paid to the calculation of linear circuits of sinusoidal current in the steady state. This app may be used in teaching theoretical electrical engineering. My open-source SPICE-alike (text input) circuit simulator FoxySim – Web-application (written in Go) intended for online simulation DC & AC electric circuits. Posted in Software Hacks Tagged analog circuit, circuit, integration, LTSpice, modeling, numpy, programming, python, simulation, SPICE Post navigation This project is definitely worth a look if you have any interest in signal processing (digital or analog) or even if you have never heard of SPICE before and want an easier way of simulating a circuit before prototyping one on a breadboard. SPICE programs aren’t without their clumsiness, and being able to write your own tools for manipulating circuits is a powerful tool. Basically, it allows you to “plug in” a graphical analog circuit of any design into a Python script and manipulate it easily, in any way needed. ’s latest project involves simulating filters in LTspice (a SPICE derivative) and then using Python/NumPy to both provide the input signal for the filter and process the output data from it. It also means it is straightforward enough to use with other software as well, like integrating LTspice with Python for some interesting signal processing circuit simulation. SPICE as a software tool has been around since the 70s, and its open source nature means there are more SPICE tools around now to count. Some example schematics can be found here which demonstrate some of the abilities of Qucs, and many more examples are provided with the program.Using SPICE to simulate an electrical circuit is a common enough practice in engineering that “SPICEing a circuit” is a perfectly valid phrase in the lexicon. It also provides many semiconductor based components and models such as OpAmps, Diodes, MOSFETs, PMOSFETs and many more. Qucs comes with a huge array of components and models including HICUM, BSIM2, BSIM3, and soon BSIM6. Qucs doesn't just need help with programming, it also needs graphics, high quality example schematics, tutorials for the website and lots more. While Qucs is well developed, we still strive to improve the project, and will always welcome offers of help. Qucs can also import existing SPICE models for use in your simulations. DC, AC, S-parameter, noise and transient analysis is possible, mathematical equations and use of a subcircuit hierarchy (with parameterised subcircuits) are available. The Qucs GUI is well advanced and allows setting up schematics and presenting simulation results in various types of diagrams. It has been programmed for usage in the Qucs project but may also be used by other applications. It takes a network list in a certain format as input and outputs a Qucs dataset. Qucsator, the simulation backend, is a command line circuit simulator. DC, AC, S-parameter, Harmonic Balance analysis, noise analysis, etc. The software aims to support all kinds of circuit simulation types, e.g. Qucs, briefly for Quite Universal Circuit Simulator, is a circuit simulator with graphical user interface (GUI). After that simulation has finished you can view the simulation results on a presentation page or window. Qucs is an integrated circuit simulator which means you are able to setup a circuit with a graphical user interface (GUI) and simulate the large-signal, small-signal and noise behaviour of the circuit. Take a look at the screenshots to get a feel for what it can do. So far Qucs is not yet finished, but it is already packed with features. Qucs stands for Quite Universal Circuit Simulator. Qucs is a circuit simulator with graphical user interface.
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