Formula notes
The inductance estimate uses the standard single-turn circular-loop approximation: L = mu0 r (ln(8r/a) - 2), where r is loop radius and a is conductor radius. Gap capacitance is estimated from the facing wire area, then an adjustable stray capacitance is added before calculating f = 1 / (2 pi sqrt(LC)).
The result is usually dominated by the stray-capacitance assumption. Changing the environment, gap terminals, supports, nearby conductors, or the driving circuit can move the measured resonance substantially.
FAQ
Does this calculate a proven medical frequency?
No. It estimates simple open-loop geometry and a rough LC resonance. It does not validate any therapeutic claim.
Why is the resonance only an estimate?
A split ring has distributed capacitance, nearby-object coupling, terminal effects, and drive-circuit effects. This tool uses a lumped single-loop approximation for orientation.
What patent is this based on?
The geometry framing is based on US1962565A, which describes concentric split radiating circuits excited by high-frequency impulses.