Tools / Developer & Utilities / Circuit Simulator

Electronics Circuit Simulator

Draw a circuit. Test your ideas. See where the current flows.

Ready to simulate

5 junctions

5 components

Local DC solver

BUILT FOR LEARNING

From connections to calculations.

See Kirchhoff's laws in action with a local modified nodal analysis solver. Save editable circuit designs, explore idealized LEDs and discover shorts, open circuits and floating networks.

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DCSteady-state

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Using Electronics Circuit Simulator

Place junctions and supported components, set a ground node and run the DC solve. Inspect modeled readings and solution hints, then keep editable JSON and export a schematic or solved-reading CSV.

The model is DC steady state with idealized components and a simplified LED approximation, not a validated hardware or semiconductor model. AC, transients, SPICE netlists and microcontrollers are unsupported. Individual ideal-wire current is undefined rather than measured; browser recovery is best effort.

Choose a DC schematic, modeled readings or an editable circuit

Grounded DC solve: inspect supported steady-state component models and numerical hints.

SVG or PNG: share a schematic image.

Solved-reading CSV: document calculated results for the current supported model.

Project JSON: retain the supported schematic and values for editing.

Practice: inspect a simple grounded example

Open a supported resistor-and-battery example and identify its ground node.

Run the solve and inspect warnings before interpreting the modeled voltages or currents.

Save the project and label any exported readings as simulated, keeping the chosen settings with them.

This is an authored learning exercise, not a hardware test or a safety certification.

DC circuit questions

Can this simulate AC, transients or a microcontroller program?

No. The scope is grounded DC steady state with idealized components and a simplified LED model. It is not SPICE, a transient solver or a microcontroller emulator.

Why is an individual ideal wire's current not a measured result?

Ideal wires connect nodes in this model; individual ideal-wire current is undefined rather than a sensor measurement. Review component readings and numerical warnings within the model's stated limits.