Units in the core Al factor

[Pina]

al units core

Hello,
I'm having troubles with units specified with core Al factor. For example, let's take a core with "Al=2500nH". Does that mean that one turn would produce 2.5uH, two turns 10uH etc. ?

In one book it was written that Al is specified as inductance in mH for 1000 turns. But surely this isn't the case here.

Best regards

 

[yus]

al factor core

...
For example, let's take a core with "Al=2500nH". Does that mean that one turn would produce 2.5uH, two turns 10uH etc. ?
...

it is equivalent to Al = 2500nH/(#turns^2)..
1 turn -> 2.5uH * 1 = 2.5uH
2 turns -> 2.5uH * 4 = 10uH
3 turn -> 2.5uH * 9 = 22.5uH
and so on..

 

[FvM]

But surely this isn't the case here.

Surely it is. 1 nH*1000² = 1 mH