Wireless power coils, designed in minutes.

AirInduct Sim works by evaluating closed-form physics for a coil pair instead of meshing it: the magnetic field comes from the Biot–Savart law and the mutual inductance from the Neumann integral, so a run takes seconds and the same inputs always return the same outputs. You pick one of eight topologies — circular or square Helmholtz pairs, circular or square DTC (descending-turn planar spiral) pairs, or one of the four Helmholtz–DTC cross pairs — and enter turns, coil size, air gap, current and frequency. The solver returns mutual inductance M, self-inductances L_tx and L_rx, coupling coefficient k, induced voltage and peak H field, with 3D surface, heatmap and contour plots. From there you can sweep a parameter, run the optimizer toward a target, or export a PDF report, KiCad footprint, DXF outline or SPICE netlist. The AI Copilot can do the same steps on screen, running the real solver and checking every number it states against the solver output.