Single-Wire (Cylinder) Inductance Explorer

finite segment of an infinite straight wire · exact Grover / Rosa partial self-inductance · MATLAB parula theme

FORMULA & PARAMETERS

refs: [1] [2] [3]
L = 25.5 nH  (25.5 nH/in)
VALUES SUBSTITUTED (live)
ℓ length r
mm
mm
⚡ ESD HBM L sets ℓ = 72 in and solves μ_r for L = 7.5 µH (diameter alone can't reach it at that length). Diamagnetic μ_r<1 is exaggerated for visibility.

3D — true scale · scroll to zoom

● live wire — ● 28 AWG jumper ● QFN-60 (9×9 mm) ● ¼W resistor
L vs d (drag·log)
L vs ℓ (drag·log)
L vs μ_r (drag·log)
L vs k (drag·log)
live curve 28 AWG reference (25.5 nH) current value (drag me)
L-axes locked to a log scale 100 pH → 1 µH; big black ticks mark 10 nH and 1 µH. The chips at the crosshair show the live L (blue) and the 25.5 nH reference (red).