Question

The standard equation used by Hams and engineers to calculate the inductance of a solenoid coil is Wheeler’s formula (1928). It is

L=(a^2 n^2)/(2.54×(9a+10b))

, where L is the inductance in microhenry, a is the coil radius in cm, and b is the coil length in cm and n is the total number of turns.

We are now designing a solenoid coil for a solid-state NMR probe, aiming at a coil of 0.05 microhenry as the inductance. Please notice that this coil is for magic angle spinning rotors of 5 mm in diameter.

Please shown me your design and how you plan to make it.

Thank you very much.

Answer 1

Given,

Where,

L = inductance

a = radius of coil in cm.

b = length of coil in cm.

n = total number of turns.

To calculate,

The inductance of a solenoid coil.

Use the wheeler's formula