Toroid Inductor Online Calculator

Below is online calculator for calculating inductance or number of turns required to make iron core and ferrite toroid inductor. There are two calculators- the first one uses the inductance index(inductance factor) and the other uses the geometry of the toroid.

A. Using Inductance Factor \(A_L\)

Calculate N:



Result:


Calculate L:



Result:

Toroid Inductor

Iron Powered Toroid Inductor 

The formula for Iron Powered Toroid Inductor used above is given below.

Inductance(L):  \( L_ = \frac{A_L N^2}{10,000} [\mu H]\)

Number of Turns(N):  \( N = 100 \sqrt{\frac{L_{\mu H}}{A_L}} \)

where, 
- L is inductance in uH
- \(A_L\) is inductance factor(inductance index) in \(\mu H\) per 100 turn squared

Ferrite Toroid Inductor 

The formula for Ferrite Toroid Inductor used above is given below.

Inductance(L):  \( L = \frac{A_L N^2}{1,000,000} [mH]\)

Number of Turns(N):  \( N = 1000 \sqrt{\frac{L_{mH}}{A_L}} \)

where, 
- L is inductance in mH
- \(A_L\) is inductance factor(inductance index) in mH per 1,000 turn squared
 

B. Using Toroid Geometry


Geometry based Toroid Inductor Online Calculator
Calculate N:

cm
cm
cm



Result:

cm2
cm

Calculate L:
cm
cm
cm




Result:

cm2
cm
toroid geometry

Formula Used:
 
Inductance:  \( L = \frac{4 \pi N^2 \mu_i n A_e}{l_e}[nH] \)
 
Effective Length:  \( l_e = \frac{ \pi (D-d)}{ln(\frac{D}{d})} [cm^2]\) 

Effective Area:  \( A_e = 0.5 n(D-d) h[cm]\) 

where, 
- L is inductance in nH
- D is the outer diameter in cm
- d is the inner diameter in cm
- h is the height in cm
- \(A_e\) is the effective area in \(cm^2\)
- \(l_e\) is the effective length in cm
- \(\mu_i\) is the initial permeability
- N is the number of turns
- n is the number of stacked cores
 
 

Recommended links:

Post a Comment

Previous Post Next Post