http://jnaudin.free.fr/steorn/indexen.htm
I think, this is easy to debunk.
They say, they have a toroidal magnet. An ideal toroidal magnet has no
external field and so there can be no back electromagnetic force.
Now this is untrue. In this magical moment, where the permanent magnet
passes by at the toroidal magnet, the ferrite core is momentary driven
into saturation.
Because -obviously- the total magnetic field is not toroidal -in this
magic moment-, the saturation will not be toroidal.
The saturation will be strong where the magnetic field is strong.
Obviously the magnetic field is strongest near to the permanent magnet.
So, -in this magic moment- the ferrite core is saturated near to the
permanent magnet and is less saturated at the opposite side of the
toroidal core.
Therefore -in this magic moment- we have a situation where the toroid
looks like a toroid, but it doesnt work like a toroid.
In this magic moment the toroid will act like an electro-horseshoe
magnet. and we get a back-emf for a short moment.
I think this is easy to understand and to debunk.
Im disappointed that Naudin apparently tries to support this rubbish
instead debunking it and this makes me very critical about his other
experiments.
Can he be trusted? He supports and tries all kinds of obvious crap
experiments.
Possibly he does it for money, creating faked overunity orgasms for his
undisclosed customers.
Of course, I cannot accuse him that. Maybe he does it just for fun ;-)
Best,
Peter