Inductance Calculation

The C program induct0.c will calculate the inductance of a single layer, circular cross section, air core coil.
Compile command:
gcc -lm -o induct0 induct0.c
Usage: induct0 n D d b
n = number of turns
D = coil diameter (mm)
d = wire diameter (mm)
b = turn spacing >= d (mm)

Example for coil with 137 turns, 12 cm coil diameter, 0.7 mm wire diameter, 0.7 mm turn spacing:
induct0 137 120 0.7 0.7
L = 1.7623e-03
which is 1.7623 mH.

The references for the calculation are

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