Simple Experiment: Extraction of Energy from Permanent Magnets

[seychelles]

FOREST ,SIMPLE SIMPLE. SOFT IRON CORE..IT IS THE BEST MAGNETIC SHUNTING SHIELDING..
EASY TO GET EASY TO DRILL. I WILL DO IT MYSELF WHEN I GET BACK TO AUSTRALIA.

[sm0ky2]

Read Richard Willis patent

What exactly is it in this patent that we are supposed to discover?
What is unique about his patent?


This looks like a copy of Bendini patent. Slightly different wording
And no images?


The only thing Bendini does which is not covered by Willis,
is to loop the output back into the circuit.


Essentially - you have two coils, one kicks, one generates and
"pulls". It is the same wire as the first coil, so you can say the
two are in "series". One wound reverse of the first.
the two "ends".
Essentially, current that powers the motor combines with power
generated by the rotation of the same.


There is a timing circuit - for instance a reed switch would work.
Or any form of magnetorestrictive circuit, or simply a pickup coil
and a transistor.


While I myself have never seen a Bendini motor self-perpetuate,
(despite many unproven claims)
They can and do approach a state of "near unity".
Which cannot be said of many rotational motors/generators.


But, considering its' usefulness, we could throw the whole of
the electronics away and be better served with a Flywheel.

[dieter]

To come back on topic,


There were some nice explanations, about speakers, wood etc, basicly saying that above a certain PM fieldstrength no further optimation is possible.


Now, that was precisely my question, twice: What is this limit? Can it be calculated? Is there a linear relation to the coil pulse in joule?


I have to tell you, from what I see in my tests, the gain does not decrease progressively with bigger PMs.


Did you ever notice the tiny coils in speakers, compared to the PM size? Why is this ratio so diffrent from Motors containing PMs?

[telecom]

I think there are two types of action - when the force is momentary vs the force is
constant.
The work calculations are not applicable to the momentary force action,
but they are applicable to the constant force action.
But by sending the projectile up against the gravity with a momentary force,
it becomes possible to calculate work on the way down, when the gravity force is constant.

[dieter]

I'm not getting it, gravity is constant, so why not removing it from the equation in the first place?


Again, what happens is: a coil gets a short pulse and is repelled from the PM. As the coil is moving away, several things happen: the coil genetates a secondary field, that is attracting the PM, but this effect vanishes at square over distance. Also, the end of the pulse must cause a BEMF in the coil, theoreticly also attracting the coil. if the pulse is too short this may indeed reduce the efficiency.


However, in a motor with alternating PM polarity, the secondary field and BEMF of the coil would be attracted by the next PM, but this causes indiction again, this say thertiary field, so that would at least neutralize the conventional losses due to the seconday field. In fact, offering the secondary field a better fluxpath may not only be used to neutralize the Lenz drag from the repelling PM, but even to add torque to the shaft. Well just a thought.