Split Flux Transformer

[seaad]

Ok understand. I'm going to do a test later but I'm not expecting much from a decreased diameter. I used 100 turns and vill test with 200 at the same freq next time an see if I can come close or above 100%.
Arne

@ seychelles
Hi, Have now made a second test with 200 turns to all windings. At 10 kHz it gave  n= 99% ,   At 5 kHz ; 98,4%   and   2 kHz ; 86%
Input: 3,4 V  Output: 1,4 V Output idle no load: 2,9 V

Regards Arne

[seychelles]

Thanks for your effort, great improvement.

[seychelles]

Now for an extra request, tune each coil to resonance
with series or parallel  capacitors. You might see some
better result..Each coil independently.

[seaad]

Now for an extra request, tune each coil to resonance
with series or parallel  capacitors. You might see some
better result..Each coil independently.

I have done a test with this "Main Principle Transformer" with all four input coils in parallel also.
The result was at 5 kHz parallel about 86 %  (At 5 kHz series ; 98,4% )

To tune each individual coil with such hard coupling factor between all of them as we have here is (more or less) impossible.
Imagine hard hard coupling what will happen. It's not possible without special equipments as a (special) sweep generator or similar. That's a must.

The pic  below shows what happens when (only) TWO tuned coils have different coupling factor.
Lose coupling ==> single peak  . . .  Hard ==> duoble peak
I made a test with only one capacitor across all 4 parallel inputs at 6,8 kHz  That gave; n=68%

Arne

[nul-points]

hi seaad, so its gone from 88% to 99% just by tightening the winding on the core?    are the cores tightly clamped?


thanks
np