Analog circuit simulator
Solve analog circuits — DC, transient and AC.
Passive networks, RC and RL responses, diode circuits and frequency sweeps. Build the schematic, choose the analysis, and read voltages, currents and waveforms straight from the solver.
Three analyses, one canvas
DC operating point
Find the steady-state node voltages and branch currents — bias points, divider outputs, quiescent currents.
Transient
Watch the circuit evolve in time: capacitors charging, inductors ramping, RC and RL responses on the scope.
AC sweep
Sweep frequency to see gain and phase — filter roll-off, resonance and the response of reactive networks.
A solver you can trust
Modified nodal analysis builds the circuit equations directly from your schematic; nonlinear parts like diodes are resolved with Newton iteration. The current animated on the wires and the node colours are read straight from that solution — nothing is faked for effect.
Questions
- What analog components are supported?
- Resistors, capacitors, inductors, diodes and LEDs, plus DC and AC sources, batteries and ground. That covers passive networks, rectifiers, filters and biasing.
- Can it do AC frequency response?
- Yes. The AC analysis sweeps frequency and reports the response of the reactive network, so you can see how a filter rolls off or where an RLC circuit resonates.
- How accurate is the analog simulation?
- It uses modified nodal analysis — the same formulation SPICE is built on. Diodes are solved with a nonlinear model via Newton iteration, so operating points are physically meaningful.
- Does it handle transient behaviour?
- Yes. Transient analysis integrates the circuit over time, so you can watch capacitors and inductors respond and plot the result on the oscilloscope.