Coil Calculator - Single-layer and mutil-layer coil calculation in javascript

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Coil Calculator - Single-layer and mutil-layer coil calculation in javascript

Legend:
outer diameter: diameter of the winding form including the wire layer(s)
inner diameter: diameter of the winding form
length: length of the coil (only the coil itself, not the winding form)
Don't forget to select your unit for outer diameter, inner diameter and length!
All calculations apply to solenoidal (cylinder) coils only!

Select your unit: mm inch

Inductance calculation:

Multi-layer Coil:

L = N*N * 0.2*a*a / ( 3*a + 9*l + 10*(a-b))

N =	turns
outer diameter: a =
inner diameter: b =
length: l =

L =

μH

Single-layer Coil:

L = N*N * a*a/4 / (9*a/2 + 10*l)

N =	turns
outer diameter: a =
length: l =

L =

μH

"Number of turns" calculation:

Multi-layer Coil:

N = sqrt( L * ( 3*a + 9*l + 10*(a-b)) / (0.2*a*a) )

L =	μH
outer diameter: a =
inner diameter: b =
length: l =

N =

turns

Single-layer Coil:

N = sqrt( L * (9*a/2 + 10*l) / (a*a/4) )

L =	μH
outer diameter: a =
length: l =

N =

turns

Last-Modified: Tue, 15 Feb 2005 09:14:53 GMT

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