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🧪 Tesla Coil Simulator (2D)

A 2D schematic Tesla coil: tune input power, resonance, coupling and gap distance and watch the same resonant-transformer model drive output voltage, primary current and streamer arc length.

Electromagnetism2DModerate60 FPS📱 Mobile-adapted⇄ 3D version

About this 2D companion

This schematic view drives the same resonant-transformer model as the 3D Tesla coil: output voltage rises with input power and coupling and falls off the further the Resonance slider sits from the 142 kHz tuned point, while streamer arc length and primary current scale with power and coupling together. The plain 2D view makes the primary/secondary/toroid layout and the discharge paths easy to read without orbiting a scene.

Frequently Asked Questions

How does resonance affect the output voltage?

A Tesla coil steps up voltage most efficiently when the primary and secondary circuits are tuned to the same resonant frequency. The Resonance slider is centered on 142 kHz; moving away from it detunes the system and the model reduces the output voltage accordingly.

What does the coupling slider represent?

Coupling is how tightly the primary and secondary coils are magnetically linked, set mainly by their physical spacing. Higher coupling transfers energy faster between the two circuits, raising both the output voltage and the primary current draw.

Why does arc length depend on power and coupling together?

Streamer (arc) length in the model scales with input power and coupling because both raise the peak voltage available at the toroid; more available energy lets a discharge ionize a longer path through the air before it collapses.

⚙ Under the hood

2D schematic Tesla coil driven by the same resonant-transformer voltage/current/arc-length formulas as the 3D version, with tunable power, resonance, coupling and gap distance.

Tesla Coilresonant transformerelectromagnetism2d

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install