A free program for Android, by Phasor Systems.
The DC simulation module utilizes matrix operations like LU-Decomposition and inversion to analyze circuits through solving nodal equations for a definitive solution. In transient simulation, it employs numerical integration via the Backward Euler method to assess RLC circuits' responses over discrete time intervals. Non-linear simulation, important for components such as diodes and transistors, relies on the iterative Newton-Raphson method for refining initial solution guesses. This simulation software also features a built-in oscilloscope for waveform visualization, which users can activate by connecting a meter to a circuit component and selecting an option. Further enhancing usability, it allows users to save schematics directly on their devices for convenient access and screen capture. The software supports an extensive range of components from basic resistors, capacitors, and inductors to complex items like transistors, diodes, LEDs, sources, meters, as well as logical gates and switches, enabling comprehensive circuit simulation and analysis.
