Experimenters Circuits

Experimenters Apps

About this app

A circuit simulator for learning electricity and electronics. Pick components and instruments, place them in the workspace and connect their terminals with cables. The simulation runs while you build, so the meters and lamps respond to every new connection and every turn of a knob.

WHO IT IS FOR
Students studying electricity in school or at university, teachers demonstrating a circuit to a class, and anyone who wants to understand how a circuit works before building a real one.

WHAT YOU CAN DO
• Open a ready-made lab — Ohm's law, series and parallel circuits, capacitor charging, resonance, a rectifier, a transistor switch — and change it as you like.
• Build circuits from power sources, resistors, capacitors, inductors, transformers, diodes, transistors, lamps, LEDs, switches and fuses.
• Measure with an ammeter, voltmeter, wattmeter and oscilloscope.
• Operate each instrument with its own controls: turn knobs, flip switches and press buttons.
• Slow time down and watch what normally takes a fraction of a second.
• Turn off the room light and see the lamps and LEDs glow.
• Undo and redo your steps, copy part of a circuit and align everything to a grid.

WHEN SOMETHING GOES WRONG
The lab does not stop you from making a mistake. Short a power supply, and it switches itself off. Give a lamp too much voltage, and its filament flashes and burns out. An overloaded fuse blows. A source has internal resistance, a cable has a resistance of its own, and a meter slightly changes the circuit it measures.

GOOD TO KNOW
• Save your circuits and open them again later.
• No account is needed to build, measure and save.
• Remember: working with electricity in real life requires care.

What’s new

• Ammeter and voltmeter in AC mode show true RMS: direct current and voltage read zero, and the reading no longer freezes at zero frequency.
• The simulation no longer stops with a very large capacitor on the board, and meters next to it read correctly.
• Knobs, levers and sliders on the instruments light up while you hold them.
• Now you can delete your account right in the app.
• Now you can keep up to 10 circuits in the cloud with a free account.