is the turns ratio of a transformer an indication of inductance ratios?

[PomPom]

Hi

i'm looking at this transformer, P3855.006 (21uH) **broken link removed**

it says primary inductance is 21uH. But turns ratio, for one set of the xfrms, is 1.33:1. So is that side also 21uH or does it scale to 16uH?

Im designing a boost converter but i want it to output two voltages, a regulated one, and an unregulated one that is ~1.33 greater. i'm trying to figure out if there will be sufficient inductance if i use this transformer.

thank you.

 

[ysba]

The rate of inductance is equal to the turns ratio squared.

Inductance can be defined in geometric terms as L = AL * N^2, being AL = u*A/l (permeability times winding cross section by winding length)

L1 = AL * N1^2 and L2 = AL * N2^2

As AL is equal for both windings,

L1/L2 = N1^2 / N2^2

L1/L2 = (N1/N2)^2