Hi Laurent,
In the meantime Miroslav answered my questions on his test setup of the 2nd video, see here in the other thread:
http://www.energeticforum.com/energe...tml#post251538
So it seems the precise winding on the half toroid core is a must; he used laminated core and he also wrote that the distance between the core and the magnet to be minimal. This latter surprises me a little, for I though a special ratio in the diameter of the core + magnet is also required, now it seems not.
An important drawing is shown (post #7) in the middle: the center line of the magnet and that of the core should match!
Regarding the coil windings, it seems that the turns should come to the very edge of the core and there can be no unwound core area left at the edges.
I understand your points of views you wrote above on this setup after you did the tests. Miroslav is willing to answer questions.
Greetings, Gyula
In the meantime Miroslav answered my questions on his test setup of the 2nd video, see here in the other thread:
http://www.energeticforum.com/energe...tml#post251538
So it seems the precise winding on the half toroid core is a must; he used laminated core and he also wrote that the distance between the core and the magnet to be minimal. This latter surprises me a little, for I though a special ratio in the diameter of the core + magnet is also required, now it seems not.
An important drawing is shown (post #7) in the middle: the center line of the magnet and that of the core should match!
Regarding the coil windings, it seems that the turns should come to the very edge of the core and there can be no unwound core area left at the edges.
I understand your points of views you wrote above on this setup after you did the tests. Miroslav is willing to answer questions.
Greetings, Gyula
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