Originally posted by Ufopolitics
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Ufo, not a bad take on it. I think when he uses the iron powder he is pulsing the coil(s) with high current which would drive the core into saturation. Core saturation would cause excessive fringing. However due to the opposing coil(s)'s mmf, my theory is zero flux in the core. So one could say "zero net flux in the core" and allow for localized core saturation? Maybe, but I doubt it.
Here is a frame showing the iron powder pattern of the mystery winding.
In the second image I added a possible area of "N-pole" and "S-pole" as well as my turn count. It is interesting that the poles appear to be outside the coils and core, not on the surface of the core. It is almost as if the surface repels the iron powder. Compare to the bar magnet/iron powder pattern where there is a strong accumulation at the surface pole.
BTW, I proposed this "Mystery" winding a while back.
Originally posted by bistander
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Interesting stuff. Know where I can buy some iron powder?
Regards,
bi
ps. What is a TPU?



...massless, weightless and transparent Photons...same properties as Spatial Magnetic Fields don'tcha think?


!!...no noise from absolutely no one who is NOT BUILDING like We ALL are!!!
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