Air Core Coil Calc

The following is a design tool which calculates the inductance of an air core inductor.

Air core coil calc.

The calculation is based on the classic wheeler s formula for single layer inductance air core tightly wound which dates back to the radio days of the 1920s. Enter the number of turns windings. L 0 001n2d 228d 2 254l where. An air core inductor is an inductor that does not depend upon a ferromagnetic material to achieve its specified inductance.

L is the inductance in henry s. The calculator determines the inductance of a single layer coil. D coil diameter in inches inches l coil length in inches inches n number of turns inductance. Select the measurement units inches or centimeters.

This calculator is useful when making antenna matching units low pass filters crystal sets antenna traps resonant circuits or anywhere where an air cored single layer inductor is required. Formula equations for inductance of air core inductor calculator inductance of an air core coil inductor l n2 x d2 18d 40l μh where n number of turns d inductor coil diameter l inductor coil length. Could this be possible. Calculate the inductance of a single layer coil of a 10 turn air core coil wound on a cylindrical former with a diameter of 2 cm.

Some inductors are wound without a bobbin and just air as the core. Air core inductor coil inductance calculator. Coil inductance calculator to calculate the inductance of a single layer air core coil. Enter the coil length distance from first to last winding see diagram.

L is the coil length in meters 0 8radius n is the number of turns. Some others are wound on a bobbin made of bakelite plastic ceramic etc. L d 2 n 2 18d 40l where. Air core inductor designer calculator.

Enter the coil diameter form diameter wire diameter see diagram. Get help for the inductor designer close. The length of the coil is 1 cm. The inductor is a common school use transformer 5000 turn coil with wire diameter about 0 15mm the official air core value is 0 6h however when i calculate the iron core got a result of 105h.