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inductance
Air Core Flat Spiral Inductance
Computes the inductance of a flat spiral air core coil using the outer diameter, inner diameter, and number of turns. Based on the Wheeler formula for planar spiral inductors.
Inputs
Outer diameter of the spiral coil
Inner diameter of the spiral coil — must be less than outer diameter
Total number of turns in the spiral coil
Results
⚠Inner diameter must be less than outer diameter
Air Core Flat Spiral Inductance—nHInductance of the flat spiral coil in nanohenries