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

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发表于 2014-10-9 00:00:00 | 显示全部楼层 |阅读模式
易迪拓培训微波射频和天线设计培训
Hi

i'm looking at this transformer, P3855.006 (21uH) http://productfinder.pulseeng.com/pr...heets/P719.pdf

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.
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发表于 2014-10-9 00:00:00 | 显示全部楼层
易迪拓培训微波射频和天线设计培训
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
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