Toroid Calculation
This side will explain how to calculate toroidcoils.
I have made toroid tests with different number of turns and measured the inductance.
Formula : L (nH) = N
^{2}
*A
_{L}
Where:
L
= inductance in nanohenrys
n
= number of turns
A
_{L}
= inductance factor
Fabr Philips
3E25:
<500 kHz
3F3:
<500 kHz
4A11:
330 MHz
4C65:
>30 MHz
toroid4c65.pdf
Test measurement
I have measured the inductance according to the number of turns. Table below shos the results!
N
Inductance
1
0.207uH
2
0.486uH
3
0.836uH
4
1.28uH
5
1.83uH
6
2.486uH
16
12.4uH
You can order toroids from
ELFA
Sweden
Link visit my LC meter project.
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Copyright © Last modified on 23th Mars 2001.