The performance of a number of Qucs-S modelling extensions are demonstrated with a GaN HEMT compact device model and data obtained from tests using the Qucs-S/Ngspice/Xyce  ©/SPICE OPUS multi-engine circuit simulator. The multi-simulator version of Qucs is a freely available tool that offers extended modelling and simulation features compared to those provided by legacy circuit simulators. Particular importance is placed on the interaction between Qucs-S schematics, equation-defined devices, SPICE B behavioural sources and hardware description language (HDL) scripts. In the actual (0.14) version of the QUCS, we can do only AC simulation (frequency domain impedance) when using touchstone-based models. The following steps show how to produce voltage and current histograms in a simple sources-and-resistors circuit. Qucs, briefly for Quite Universal Circuit Simulator, is a circuit simulator with graphical user interface (GUI).
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This article introduces a number of new features recently implemented in the ‘Quite universal circuit simulator – SPICE variant’ (Qucs-S), including structure and fundamental schematic capture algorithms, at the same time highlighting their use in behavioural semiconductor device modelling. The result file can be used as a macro model of the power/gnd plane pair in SPICE-like simulation programs, like the QUCS program. IEEJ Transactions on Electrical and Electronic Engineering Wiley Current trends in circuit simulation suggest a growing interest in open source software that allows access to more than one simulation engine while simultaneously supporting schematic drawing tools, behavioural Verilog-A and XSPICE component modelling, and output data post-processing. © 2011 Institute of Electrical Engineers of Japan. When done, the project is opened and Qucs switches to the Content tab. Confirm the dialogue by pressing the Create button. Either press the New button above the projects folder or use the menu entry Project New Project, and enter the new project name as shown in Fig. Labels IN and OUT1 for the input and the output side of the circuit. Use an AC Voltage Source (peak value 5 V, frequency 100 kHz) an ideal diode (can be found in components / nonlinear components) a load resistor with R 1k. The Qucs-0.0.19-S-RC6 Verilog-A synthesizer is a fully working version of this new open source ECAD tool. One Pulse Rectifier with an ideal Diode This is a very simple affair. Introduction to the Qucs GPL Verilog-A Module Synthesizer: Part I Qucs-0.0.19-S-RC6 includes the Qucs GPL Verilog-A synthesis tool for compact device modelling. Equivalent circuit models for coupled oscillator and parallel‐plate electrostatic actuator (including mechanical contact after electrostatic pull‐in) are presented as a verification program to examine the simulation accuracy. For this, first create a new project named ‘WorkBook.’. Third Project: Application of Diodes 5.1. Thanks to the well‐prepared simulation toolbox of Qucs, multiphysics analysis of micromechanical and electrical quantities has become straightforward on a single platform. Those subcircuit models are used as building blocks to numerically simulate the behavior of various types of MEMS actuators. Viscoelastic suspension and electrostatic parallel‐plate actuator are modeled as equivalent subcircuits that can be cosolved with the EOM module. An analog computing solver for the equation of motion (EOM) has been interpreted to an electrical equivalent circuit by using an electrical capacitor as an ideal mathematic integrator. We report a newly developed equivalent electrical circuit for microelectromechanical systems (MEMS) based on a circuit simulator Qucs (Quite Universal Circuit Simulator). Mita, Makoto Maruyama, Satoshi Yi, Yuheon Takahashi, Kazuhiro Fujita, Hiroyuki Toshiyoshi, Hiroshi Multiphysics analysis for micro electromechanical systems based on electrical circuit simulator Multiphysics analysis for micro electromechanical systems based on electrical circuit simulator