CircuitSim is an interactive electronic circuit simulator developed using Java Swing. It offers a graphical workspace for creating circuits and observing their behaviour as components and connections are modified.
The application combines basic analogue analysis with digital logic simulation. Users can explore electrical behaviour through a grid-based editor without having to configure separate simulation tools.
CircuitSim is particularly useful for experimentation and teaching. Its continuously updated simulation environment makes it straightforward to investigate how changing component values or circuit connections affects the resulting behaviour.
This is free and open source software.
Key Features
- Real-time simulation of analogue and digital electronic circuits.
- Continuous DC-style solver for calculating voltages and currents.
- Short-circuit detection during analogue simulation.
- Digital logic gates including AND, OR, NAND, XOR and NOT.
- Digital signals represented using 0V and 5V logic levels.
- Custom component editor with configurable input and output ports.
- Nested custom components and reusable component libraries.
- Grid-based component placement and wiring.
- Drag-and-drop component selection from grouped palettes.
- Rotate, resize, pan and zoom circuit designs.
- Properties panel for adjusting component parameters.
- Customisable wire colours and component titles.
- Save and load circuit boards using JSON files.
- Autosave and undo/redo facilities.
- Cross-platform support – runs on Linux, macOS, and Windows.
Website: github.com/BlazingHotCode/CircuitSim
Support:
Developer: Nadav Babad
License: Apache License 2.0
CircuitSim is written in Java. Learn Java with our recommended free books and free tutorials.
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Read our verdict in the software roundup.
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