transformer windings in between transformer windings

[J4e8a16n]

Hi,

What would happen if I wind 28 turns of  .75 mm wire in the middle (200-28-200)  of 400 turns of .5 mm windings?  Would I have a better  K factor?

Thanks for your attention.

JPD

[Zero999]

I don't see how it would make any difference to the transformer's ability to withstand harmonic content.

[J4e8a16n]

Hi,  Well I did it and it heats up a lot at 60 Hz.......   This gapped core was a high-frequency one. Maybe that's why although I doubt it.

I tried it at 50KHz  with a 555 timer. It doesn't heat. 
Approximately:
I have .5 ohm and .23mH on the primary  (28 turns) and
2.8 ohms and 28 mH on the secondary (330 turns).

The primary pumps 20 Watts at 4 volts.  But I don't read a significant voltage on the secondary.

This seems consistent  with Np/Ns= sqrt(Lp/Ls)


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