Is there some free online circuit simulator where I can see see the electrons fluxing,imitating real-life circuitry?

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    \$\begingroup\$ I use Falstad: falstad.com/circuit Very simplistic, but shows current flow. \$\endgroup\$
    – Majenko
    Commented Feb 15, 2015 at 0:04

1 Answer 1


Doing a quick search on EE.SE I found: Free circuit simulator for educational purposes

Falstad seems to support animated electrons, and it is free.

However, if you are willing to shell out 10 bucks, I highly recommend EveryCircuit. It supports

  • Adjusting component values mid-simulation and seeing the effects in real-time.
  • A large variety of components.
  • Intuitive, and smooth animation: i.e. the electrons move faster for large currents/small currents, LEDs have varying brightness.

Here's a screenshot of EveryCircuit:

enter image description here

There is a free app version and an online version also.

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    \$\begingroup\$ everycircuit.com/app says "Chrome browser is required to run this App" :( I will not install Chrome just for this app. \$\endgroup\$
    – sergiol
    Commented Feb 17, 2015 at 20:38
  • \$\begingroup\$ CircuitJS has come a long way in the meantime; it does now have those features you bring up for EveryCircuit.. Maybe you can reevaluate and update this post : ) \$\endgroup\$
    – eMPee584
    Commented Dec 15, 2020 at 8:47

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