Two grounded-water outlets feed conductive collectors through induction rings. A ring wired to the opposite collector polarises newly forming droplets. Cross-connection produces positive feedback for opposite-polarity charges; electric field growth eventually triggers a spark across the discharge gap.
Use CROSS to watch self-excitation, LOCAL for charge-decaying negative feedback, or OPEN to isolate induction rings. Higher humidity increases leakage, while a wider gap raises the approximate breakdown voltage.
Limitations: lumped capacitances, heuristic droplet charge saturation and leakage, an empirical sharp-tip breakdown rule, and a simplified discrete spark energy model. No real high voltage is generated.
