FREE ELECTRONIC CIRCUIT DESIGN AND SIMULATION SOFTWARE,


POWER SUPPLY CALCULATORS, CAD PROGRAMS DOWNLOADS, PSPICE MODELING,
AND OTHER ENGINEERING DESIGN TOOLS



Circuit simulator

is a computer program predicting the behavior of a real circuit. It replaces real components with idealized electrical models. Since the result can never take into account all physical processes in the parts and all PCB parasitics, the simulation will only reflect the model that is put into it. Therefore this technique can't entirely substitute breadboarding and prototyping. On the other hand, it allows measurements of internal currents, voltages and power that in many cases are virtually impossible to do any other way. Most general-purpose programs are based on various versions of SPICE (Simulation Program with Integrated Circuits Emphasis). They can handle analog, logic and mixed-signal components.

PowerEsim- free online SMPS design and simulation tool
Commercial software usually include schematic capture, extensive model libraries, and waveform display and analysis functions. Some programs also provide circuit design and even PCB layout. In SPICE, circuits are presented by so-called netlists. A schematic capture allows you to draw the diagrams and automatically translate them into netlists. Complete electrical design and analysis programs are relatively expensive. Designers who want to simulate their circuits without buying a full package have basically three options: 1) Working demos (usually limited to small-size circuits with some functions disabled); 2) Open source programs (with little or no tech support); 3) Software provided by the component manufacturers (often good only for the designs that use these manufacturers' parts).

Here you will find free electronic circuit simulators, power supply calculators, and other electrical engineering design tools on the web.




FREE ELECTRICAL CIRCUIT DESIGN SOFTWARE and EDA (DEMOs and GPL)

VENDORS' POWER SUPPLY DESIGN AND CIRCUIT SIMULATION SOFTWARE

POWER SUPPLY CALCULATORS AND SPREADSHEETs

General-purpose circuit simulation program download for Windows (MinGW) and Linux based on Spice 3f5

PowerESim -free online power electronic circuit simulator and design tool (waveforms, loop, thermal, harmonics, mags)

Non-Linear Electronic Circuit Simulation- uses ideal components for fast analysis

Online SPICE simulators resources- free PSPICE models, tutorials, downloads

gEDA - GPL'd suite of Electronic Design Automatiion (EDA) tools for GNU/Linux and Windows platforms

PSIM - working demo of power electronic circuits simulator
LT Spice IV / Switcher Cad download- electrical circuit simulation for analog and switching regulator ICs

Webench - online electrical design, calculation and thermal analysis of DC-DC converters

TINA-TI™ - analog circuit analysis without any node or number of device limitations

Waveforms and losses analysis of multi-phase DC-DC converters


FIND ENGINEERING SOFTWARE BY SPEC
ELECTRICAL FORMULAS, THEOREMS, LAWS and DESIGN BASICS
Analysis of critical conduction mode active PFC boost regulators

Power factor correction (PFC) boost: interactive design and simulation

Buck regulator calculation spreadsheet

Basic online calculation and waveforms of currents and voltages for main SMPS converters



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Lazar Rozenblat