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#Qucs tutorial deutsch simulator#

#Qucs tutorial deutsch license#

This permissive open source license allows its integration as a simulation engine into several - proprietary or free/libre - EDA tools such as KiCad, EAGLE (program), CoolSPICE, Altium and others. Ngspice is licensed under the BSD-3-Clause license.

#Qucs tutorial deutsch software#

tclspice, another shared library version, offers an interface to Tcl/ Tk (software) for better integration with software like XCircuits. Its interface provides access to all simulation parameters, input and output data. Ngspice may be compiled into a shared library (*.dll or *.so) readily to be integrated into a calling program.

C language coded models with spice format: As an open-source project, Ngspice allows new models to be linked to the sources and compiled.

Verilog-A compact models: OSDI interface for dynamically loading OpenVAF compiled Verilog-A models.

The Xspice codemodel interface: This is a C-code interface that helps the modeling process by simplifying the access to simulator's internal structure.

Behavioral modeling: Internal B-, E-, and G-sources, as well as R, C and L devices, offer modeling by mathematical expressions, driven by node voltages, branch currents, parameters and constants.

#Qucs tutorial deutsch simulator#

New models can be added to the simulator using: The implementation of the node is created and simulated by using C language with macros which is compiled by standard C/C++ compilers. Ngspice provides an internal scripting language to facilitate complex simulation and evaluation control flows.įor mixed signal circuit simulation ngspice allows users to create a user-defined node definition file (UDN) of a new device model interface. PSPICE compatible parametric macromodels, often released by manufacturers, can be imported as-is into the simulator. netlists can contain parameters and expressions). Ngspice supports parametric netlists (i.e. Ngspice implements various circuits elements, like resistors, capacitors, inductors (single or mutual), transmission lines and a growing number of semiconductor devices like diodes, bipolar transistors, MOSFETs (both bulk and SOI), MESFETs, JFETs and HFETs.

Small-Signal distortion analysis and frequency response analysis (AC).

Operating point sweep analysis - determines the values of output variables while one or two specified independent voltage or current source is stepped over.

Operating point analysis - determines the dc operating point of the circuit with inductors shorted and capacitors opened.

AC analysis includes small-signal noise simulation, pole-zero and transfer function analysis: Transient analysis includes transient noise simulation. Ngspice implements three classes of analysis: Critical devices can be described with their technology parameters (numerical models), all others may use the original ngspice compact models. It couples the circuit-level simulator to the device simulator to provide enhanced simulation accuracy (at the expense of increased simulation time).

Cider adds a numerical device simulator to ngspice.

#Qucs tutorial deutsch code#

Xspice is an extension to Spice3 that provides additional C language code models to support analog behavioral modeling and co-simulation of digital components through a fast event-driven algorithm.SPICE is the origin of most modern electronic circuit simulators, its successors are widely used in the electronics community.Ngspice is based on three open-source free-software packages: Spice3f5, Xspice and Cider1b1: A small group of maintainers and the user community contribute to the ngspice project by providing new features, enhancements and bug fixes. It is a successor of the latest stable release of Berkeley SPICE, version 3f.5, which was released in 1993.

Ngspice is an open-source mixed-level/ mixed-signal electronic circuit simulator.

net /projects /ngspice /files /ng-spice-rework /