Free Electronics Design Software

If you are a student or a electronics hobbyist who does not need to have complicated electronics design software to help you in your design work, it is strongly recommended that you consider the following free electronics design software that can be downloaded. There are some software which allow you to use for 30 days or so before you decide to purchase them. However, if you can live with limited feature, you can get a free download

without having to pay for a full feature software.
Among some of the free electronics design software that can be downloaded are free pcb software, circuit analysis software and electromagnetic planar structure analysis software.EAGLE PCB Layout Editor Software
The EAGLE Layout Editor is a free PCB software (see the conditions) which is easy to use, yet powerful tool for designing printed
circuit boards
(PCBs). The name EAGLE stands for Easily Applicable Graphical Layout Editor. It has 3 main modules which consists of schematic editor, layout editor and autorouter.ExpressPCB PCB Layout Editor Software
The ExpressPCB schematic and PCB design
software is very quick to learn and completely free! Download a fully functional version here.5Spice Analog Circuit Simulation Software
5Spice is a graphical user interface software that offers easy to use analog circuit simulation for the electronic circuit designer. 5Spice provides the analysis capabilities needed by experienced circuit designers while remaining easy to use. The focus is on analog circuit analysis and circuit design at the component level.
FiltersCAD Software For Designing Filters
FiltersCAD is a comprehensive PC based filter synthesis
software package
that provides active circuit synthesis.Convert Your PC Into A Dual Trace Oscilloscope
Convert your
PC into a dual-trace storage oscilloscope and spectrum analyzer. It uses your computer's sound card as analog-to-digital converter, presenting a real-time waveform or spectrum of the signal - which can be music, speech, or output from an electronic circuit.Spice III simulator from Linear Technology
SwitcherCAD™ III is a high performance Spice III simulator, schematic capture and waveform viewer with enhancements and models for easing the simulation of switching regulators.
Sonnet Lite EM analysis Software
Sonnet Lite is a free feature-limited version of Sonnet's professional Sonnet Suite, which provides Electromagnetic analysis that is able to analyse predominantly planar high-frequency designs from 1 MHz through several THz. PCB trace crosstalk analysis, Microstrip matching networks and Microwave circuit discontinuities amongst others can also be analysed.
Multilayer Air Core Inductor Calculator
Calculate the number of turns, DC resistance and other inductor data based on the input data of the inductance, coil inner diameter, coil length and wire gauge.
Resistor Color Code Interpreter
Enter the color codes of the resistor and you will get its resistance. This calculator also shows the equivalent values of 2 resistors that are connected in parallel and in series.