This is an electronic circuit simulator. When the applet starts up you will see an animated schematic of a simple LRC circuit. The green color indicates positive voltage. The gray color indicates ground. A red color indicates negative voltage. The moving yellow dots indicate current.

To turn a switch on or off, just click on it. If you move the mouse over any component of the circuit, you will see a short description of that component and its current state in the lower right corner of the window. To modify a component, move the mouse over it, click the right mouse button (or control-click if you have a Mac) and select “Edit”.

The "Circuits" menu contains a lot of sample circuits for you to try.

Full Screen version.

Directions.

Standalone (offline) versions.

Index of Circuit Examples. (Polish version)

More applets.

Javascript version. Latest changes here, including subcircuits.

Report a problem/feature request

Huge thanks to Iain Sharp for the Javascript port. You can still use the original Java version. More acknowledgements in the about box.