Free Analogue circuit simulation, mainly in LTspice.
This website is based mainly on providing electronic copies of circuits for use in free circuit simulators, there is some explanatory text on the website and the circuits, but its the circuits that are the main thing.
I guess its that some of us work better with circuit diagrams than a load of text.
The simpler circuits should be okay on a standard size of laptop screen, for the more complex circuit you will benefit from a larger screen. I use a laptop and an extra 31 inch 4k screen.
The most widely used free circuit simulator is LTspice, there are other free simulators available, info on these is available here.
![Other free electronic circuit simulators.]()
About this website.
This website offers free downloads of electronic circuits for simulation mainly in LTspice, but also a few circuits in Qspice and Micro-cap.
this allows you to see the voltage and current waveforms throughout the circuit without having to build the circuit or buy any test equipment.
In fact you don't need to spend any money at all.
Start off by downloading and installing LTspice from www.analog.com
Then click on the below links to open the various circuit categories, then download the circuits, or the ZIP files if your browser is giving you grief,
then open the circuit with LTspice, and follow the instructions on the cct diag. to run the ciruit and view the waveforms.
Regarding text on the circuit diagrams, blue text is just comment, black text is read by the spice simulator.
There is comment text on the circuits explaining how to run the simulation and plot the waveforms