Online Electronic Circuit Simulator

Electronic Circuit Simulator is an interactive online tool for real-time electrical circuit modeling. With this service, you can build a circuit from basic components: resistors, capacitors, transistors, inductors, diodes, logic gates, and power sources. You will immediately see how currents and voltages distribute across it.

The tool visualizes circuit behavior with animation: charge movement is shown as moving dots along the conductors, and a built-in virtual oscilloscope lets you observe the waveform at any point in the circuit. This makes the simulator equally handy for educational purposes, such as learning the fundamentals of electrical engineering and electronics. It is also useful for quickly testing ideas before assembling a physical device.

This circuit simulator will be useful for engineering students, hobbyists, physics and electronics teachers, and engineers who need a fast sanity check on a simple circuit without firing up a full-fledged CAD package. All computations run right in your browser. No sign-up or extra software installation is required.