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Electronics => Beginners => Topic started by: J4e8a16n on April 20, 2017, 05:18:10 pm

Title: transformer windings in between transformer windings
Post by: J4e8a16n on April 20, 2017, 05:18:10 pm

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

Title: Re: transformer windings in between transformer windings
Post by: Zero999 on April 20, 2017, 05:21:37 pm

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

Title: Re: transformer windings in between transformer windings
Post by: J4e8a16n on April 20, 2017, 07:43:15 pm

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)


:o)