Kapanadze Cousin - DALLY FREE ENERGY

[poynt99]

verpies,

Yes, it appears itsu's toroid inductance is roughly doubling rather than quadrupling when going from 6T to 12T.

This may be the result of leakage inductance as you mentioned, but I'm not so sure there is much by way of circumferential currents there.

itsu might want to try a "progressive winding" technique for the 12T side. This way roughly the same length of core will be covered for both coils. See the attached.

[Magluvin]

verpies,

Yes, it appears itsu's toroid inductance is roughly doubling rather than quadrupling when going from 6T to 12T.

This may be the result of leakage inductance as you mentioned, but I'm not so sure there is much by way of circumferential currents there.

itsu might want to try a "progressive winding" technique for the 12T side. This way roughly the same length of core will be covered for both coils. See the attached.

Thats an interesting winding technique. It allows 2, or more I suppose, layers but very reduced capacitance between first layer and second layer windings. Very cool.

Mags

[itsu]

Mag's,

That's an interesting winding technique.

interesting, right, but if it is feasible on such a small toroid with that small wire (0.3mm) i am not sure.
Let me try that out, probably need some glue to hold the wire in place

Regards Itsu

[d3x0r]

I dunno; think you'd get as good capacitance by just spreading it out, you have plenty of space to do a 1:2 space/wire ratio around...

[verpies]

I dunno; think you'd get as good capacitance by just spreading it out, you have plenty of space to do a 1:2 space/wire ratio around...

Yes, spreading them out or using a thicker wire to cover the whole circumference of the core would be better.
20A flowing through a Φ 0.3mm wire gives me the jitters.

As far as the circumferential current for a 1 layer 6 turn uncompensated winding covering the full circumference of a toroid, the ratio of the radial current to circumferential current is 6:1, so it is significant.

More than 12 turns will not hurt the inductance measurements when the turns are spread out a little.