Ltspice linux

Object such as alist or a generator as a second argument.When the run_all() method is called, it will make run a simulation per each combination of values. On the example aboveit will make the simulations:(XU1, V1) in (("AD712", 5), ("AD712", 10), ("AD712", 15), ("AD820_ALT", 5), ("AD820_ALT", 10), ("AD820_ALT", 15))It should be noted that for each sweep method added it will add a new dimension simulation space.In other words, the total number of simulations will be the product of each vector length. There is no restriction tothe number of simulations to be done, however, a huge number of simulation will take a long time to execute and mayoccupy a considerable amount of space on the disk.Simulators and Windows, Linux and MacOS compatibilityThe LTspice class tries to detect the correct path of the LTspice installation depending on the platform. On Linuxit expects LTspice to be installed under wine. On MacOS, it first looks for LTspice installed under wine, and when itcannot be found, it will look for native LTspice. The reason is that the command line interface of the native LTspice isseverely limited.If you use the native LTspice, please make sure that you have installed the libraries via Settings: Operationtab, Model Update button.Ngspice runs natively under Windows, Linux and MacOS (via brew). This library works with Ngspice CLI, and tries todetect the correct executable path, no matter the platform. It cannot (yet) work with the shared library version ofNgspice that is delivered with for example Kicad, you will need to install the CLI version. You can however use Kicad asthe schema editor and subsequently save the Ngspice netlist to use it with this library.For the other simulators, built-in Linux/MacOS support is coming, but you can always try to use it under Linux viasetting of the executable paths.Executable and Library pathsA large variety

README current version: 1.4.2spicelib is a toolchain of python utilities design to interact with spice simulators, as for example:LTspiceNgspiceQSPICEXyceTable of ContentsWhat is contained in this repositoryMain ToolsMain ClassesHow to InstallUpdating spicelibUsing GITHubHow to useLICENSEMain modulesRawReadRawWriteSpiceEditor, AscEditor, QschEditor and SimRunnerSimStepperSimulators and Windows, Linux and MacOS compatibilityExecutable and Library pathsRunner log redirectionAdding search paths for symbols and library filesLimitations and specifics of AscEditorHierarchial circuits: reading and editingSimulation Analysis ToolkitltstepsCommand Line Interfaceltsteps.exehistogram.exeraw_convert.exerawplot.exerun_server.exeasc_to_qsch.exeOther functionslog\semi_dev_op_reader.opLogReaderDebug LoggingSingle Module LoggingTo whom do I talk?HistoryWhat is contained in this repositoryMain ToolsAnalysis ToolkitA set of tools that prepare an LTspice netlist for a Montecarlo or Worst Case Analysis. The device tolerances are setby the user and the netlist is updated accordingly. The netlist can then be used with the SimRunner to run a batch ofsimulations or with the LTspice GUI.ltsteps.exeAn utility that extracts from LTspice output files data, and formats it for import in a spreadsheet, such like Excelor Calc.histogram.exeA python script that uses numpy and matplotlib to create a histogram and calculate the sigma deviations. This isuseful for Monte-Carlo analysis.(Note that the extension '.exe' is only available on Windows. On MacOS or Linux, the commands will have the same name,but without '.exe')Main ClassesAscEditor/QschEditor/SpiceEditorClasses for the manipulation of respectively:LTspice .asc filesQSPICE .qsch filesSPICE netlists (from no matter what simulator)without having to open the schematic in a GUI. The simulations can then be run in batch mode (see SimRunner). Examplesof functions provided:from spicelib.editor import SpiceEditornetlist = SpiceEditor("example.net")netlist.set_element_model('D1', '1N4148') # Replaces the Diode D1 with the model 1N4148netlist.set_component_value('R2', '33k') # Replaces the value of R2 by 33knetlist['R2'].value = 33000 # Same as abovenetlist.set_component_value('V1', '5') # Replaces the value of V1 by 5netlist['V1'].value = 5 # Same as abovenetlist.set_parameters(run=1, TEMP=80) # Creates or updates the netlist to have .PARAM run=1 or .PARAM TEMP=80netlist.add_instructions(".STEP run -1 1023 1", ".dc V1 -5 5")netlist.remove_instruction(".STEP run

PathsAscEditor.set_custom_library_paths("/mypath/lib/sub", "/mypath/lib/sym", "/mypath/lib/sym/OpAmps", "/mypath/lib/cmp")Runner log redirectionWhen you use wine (on Linux or MacOS) or a simulator like NGspice, or if you run simultaneous simulators,you may want to redirect the output of run() or run_now() or create_netlist(), as it prints a lot ofconsole messages without much value. Real time redirecting to the logger is unfortunately not easy, especiallywith the simultaneous runner. You can redirect the output for example with:# force command console output to a separate file, which is# named like the netlist file, but with extension ".exe.log"runner.run(netlist, exe_log=True)This is supported on both the SimRunner and directly on the various simulators (LTspice,..).The runner client server function (see SimClient) does not (yet) support this, but it is less bothersome there.Adding search paths for symbols and library filesLTspice allows users to add Search Paths for symbol and libraries. This is very helpful when sharing non-nativelibraries and symbols between different projects. The spicelib supports this feature by using theset_custom_library_paths() class method as is exemplified in the code snippet below.from spicelib import AscEditorAscEditor.set_custom_library_paths([r"C:\work\MyLTspiceSymbols", r"C:\work\MyLTspiceLibraries"])The user can specify one or more search paths. Note that each call to this method will invalidate previously set searchpaths. Also, note that this is a class method in all available editors, [SpiceEditor, AscEditor and QschEditor], thismeans that updating one instantiation, will update all other instances of the same class.Limitations and specifics of AscEditorAscEditor has some limitations and differences in regard to SpiceEditor.As is visible in the LTspice GUI, it groups all component properties/parameters in different 'attributes' like 'Value', 'Value2', 'SpiceLine', 'SpiceLine2'. Netlists do not have that concept, and place everything in one big list,that SpiceEditor subsequently separates in 'value' and 'parameters' for most components. To complicate things, LTspicedistributes the parameters over all 4 attributes, with varying syntax. You must be aware of how LTspice handles theparameter placement if you use

The VDMOS model as used in LTspice simulator can model power MOSFET's nicely. Mike Engelhardt updated the VDMOS (May 2019) to include temperature parameters. I have updated my earlier IRF's and Exicon lateral's. They can be downloaded here for LTspice XVII OR LT-IV here. Updated Tutorial PDF for extracting parameters for the IRFP240 and IRFP9240. Download PDF below. A simple jig does pulse measurements (DIY breadboard it - may need Scope). Download PDF below. To simulate CMOS inverters eg for guitar overload effects then you need to use a MOSFET model with quasisaturation. The LTspice VDMOS lacks quasisaturation. It can be added using a subcircuit. Download PDF below. BTW SuperSpice already has a VDMOS with quasisaturation. My files are also provided free under Creative Commons 4 Attribution (over-riding my Copyright) and no liability is accepted. Please let me know if you find errors (use Contact). LTspice jigs for the 'VDMOS parameter extraction' Tutorial PDF (Part 1), Download "Compare-Extraction-jigs-IRFP240-IRFP9240.zip" has 6 LTspice jigs here. Part 1 only (1v6) Hegglun_VDMOS-parameter-extraction-Part- Adobe Acrobat Document 640.9 KB Part 1+2 (version 1v7) Hegglun_VDMOS-parameter-extraction-Part- Adobe Acrobat Document 1.3 MB Pulse tester jig Ver 1v0 Hegglun_Simple-pulse-jig-for-power-MOSFE Adobe Acrobat Document 441.2 KB LTspice files below for the 'Simple pulse jig for power MOSFETs' : Download "VDMOS+EKV-10x20+20x20" LTspice jigs and Spreadsheet here. Download "VDMOS-20N20+20P20-measured-data" here. Dec 2021 superseded: Subcircuit to add Quasisaturation to the VDMOS (Ver 0v1) white paper here and LTspice demo files here Triode+SIT+jFET subcircuit using the VDMOS Dec 2021: This is an ambitious subcircuit! I may change it into 3 separate versions some day. updated white paper here. models and demo jig here. Update Jan 2023 This VDMOS subcircuit models jFET's, SIT's and Triode's, it adds effects including: Gate-drain leakage current (IGSX) that changes with Vds and temperature Quasisaturation for jFET's is significant for most small-signal jFET plots Noise and breakdown parameters are also included Triode (SIT) Mu varies with Vgk (Vgs) and Vak (Vds), and Triode positive grid current is modulated by Vak Update Jan 2023 TriJmos-Triode-and-jFET-model-using-the- Adobe Acrobat Document 839.7 KB

Correctly handled. (Issue #88)Support for all known QSpice components.Improving testbench for the QschEditor.Version 1.2.0Implementing a new approach to the accessing component values and parameters. Instead of using theget_component_value() and get_component_parameters() methods, the component values and parameters are now accesseddirectly as attributes of the component object. This change was made to make the code more readable.The old methods are still available for backward compatibility.Improvements on the documentation.Added testbench for the regular expressions used on the SpiceEditor. Improvements on the regular expressions.Improvements on the usage of spicelib in Linux and MacOS using wine.Version 1.1.4Fix on line patterns on the AsyEditor (#PR 65)Fix on the X (.SUBCKT) components regex (#PR 66)Version 1.1.3Implementing a set_component_parameters() and get_component_parameters() method on the Editor classes.This method allows to set and get the parameters of a component.Bug Fixes:AscEditor was hanging in comments. Issue #43Supporting other text orientations on the AscEditor. Issue #44Allow other encodings in AscEditor. Issues #45 and #48Supporting lines, rectangles, circles and arcs in AscEditor.Improving the regex for the component values in the SpiceEditor.Version 1.1.2Fixes on the readme_update.py script. Was not supporting spaces after the []Solving issue PyLTspice Issue #138. Hierarchical edits to ASC files are now supported.Version 1.1.1Supporting hierarchical edits on both QSPICE and LTspice schematicsSkipping the need of the rich library on examplesGiving feedback on the search for symbols on the ASC to QSCH conversionImprovement on DocumentationAdding examples and unittests on hiearchical editsGiving access to hidden properties (asc_file_path in AscEditor and qsch_file_path in QschEditor)Refactoring save_netlist() method in QschEditor classSupporting arcs and rectangles on AsyReaderAdding file_search.py containing utility functions for searching filesAdding windows_short_names.py containing a code to get the 8.3 Windows short names.Version 1.1.0First usable version of a LTspice to QSPICE schematic converter.Version 1.0.4Adding the missing the asc_to_qsch_data.xml to the packageAdding a MANIFEST.in to the projectAdding keywords to the project.tomlVersion 1.0.3Correcting the generation of a

Today’s electronics systems require an increasing number of power rails and supply solutions, with the load range from a few mA for standby supply to over 100A for ASIC or FPGA core voltage regulators. It is important to have the appropriate solutions for the targeted applications and meet specified performance requirements, such as high efficiency, high reliability, tight printed circuit board (PCB) space, accurate output regulation, fast transient response, and low solution cost. Power management design, especially embedded switching mode supply design, is becoming a more frequent and challenging task for system designers, who may or may not have strong power supply backgrounds. Analog Devices offers a pair of tools, LTspice IV and LTpowerCAD II to help designers tackle these challenges.The LTspice schematic capture and simulation tool offers a powerful aid to system designers in understanding the operation of an analog circuit and visualizing its waveforms and dynamic performance. LTspice is especially helpful in the following situations: When a user needs to develop a new circuit solution or unfamiliar supply topology If a user needs to understand or evaluate a new LTC product When a user needs to check a circuit’s dynamic behaviors and performancesHowever, because it is a general purpose simulation-oriented tool instead of design-oriented tool, LTspice has some limitations: For an inexperienced supply designer, the simulation waveforms do not provide sufficient explanations nor guide him with component selection and design trade-offs. For an experienced supply designers working on a familiar topology/solution with many repetitive designs, simulation may not be a necessary or productive design method. Instead, he really needs a spreadsheet tool to quickly calculate power supply parameters/values and estimate its performance. The LTspice simulation does not offer a detailed supply efficiency estimation and loss breakdown analysis, which can be very useful to select power components. LTspice does not offer a convenient , fast loop compensation design method for a switching mode supply. The user needs to either build his own small signal circuit model or do repetitive time-domain simulations with sinusoidal perturbation waveforms, which can be challenging and time consuming. As a complement to the LTspice simulation