When a inductor does not use a magnetic core, air core coil have low inductance nut used at high frequencies and they are free from energy losses. This electrical energy calculator is a great tool to calculate air core coil inductance.

Air Core Coil

To calculate Air Core Coil:

Coil Diameter (d)

inches

Coil Length(l)

inches

Number of turns (n)

turns

Inductance

µH

Formula:

F = (n x i)^{2} x magnetic constant x a / (2 x g^{2})

Where,
F = Force,
i = Current,
g = Length of the gap between the solenoid and a piece of metal,
a = Area
n = Number of turns,
Magnetic constant = 4 x PI x 10-^{7}.

When a inductor does not use a magnetic core, air core coil have low inductance nut used at high frequencies and they are free from energy losses. This electrical energy calculator is a great tool to calculate air core coil inductance.