Self running coil?

[skywatcher]

I think, there was a video of the measurement of the toroid coil with
and without the magnet stack right at the surface of the coil. The
measurement were 1040mh [without] and 44mheneries [with]. I would
submit that this nearly 25 times difference represents the action of a high
performance ferrite material possibly traceable to Metglass.

Yes, that's possible. I have a similar material, so maybe i will try to use it.

[NextGen67]

@Luc,

Could you give me a conclusion?  I need to confirm something... 

Could you remove [as in physically take it away] your pick-up coil for a while and tune your circuit is most optimal state.  Once you have that, place your Pick-up coil back again, but do *not* put a load on it.

If my thinking is correct, your circuit became now in an *de-tuned* state ! - Could you confirm that for me?

Also, you will [easily] be able to bring your circuit back in resonance again, by *lowering* your frequency slightly [I'm not to sure if it is lowering, but I think is it lowering]. - Could you confirm this is also true ?

Now when you place a load on the Pick-up coil [or short circuit it] you should *not* see any negative effects on your circuit as in cap de-charge, or de-tuning effects. - Could you confirm this is also true ? [***]

If you have an extra magnet laying around (such a small round one):  if you have your circuit is perfect tuned state, and you add [stack] the small magnet at the end of the others, your circuit will become *de-tuned* and you can re-tune it back again, by *increasing* the frequency a bit. - Can you confirm this is true ?

Ok, that is it :-)

I've  analyzed your scope shots, and it appears to me that I understand what is going on. Your pick-up coil can be greatly improved by making full use of all available energy available on that side.. you will need a tubercular coil, so it can 'pick-up' all available energy along the Z-ax. Also this solves the number of pick-up coils to just *one* with a better effective factor.  If you have a 'sniffer' to look around where you have still good M-fields, you can take that factor as outer width for your coil.

[***] It *is* possible that if you put a NON resistive load on the pickup coil, it *could* have negative effects on the rest of your circuit, but [if true] these can be fixed.

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NextGen67

[NextGen67]

<...>

Also, be sure to have NO metallic objects in near vicinity.

That's not possible. If you look at Luc's videos, there are also plenty of metallic objects...

I mean *near*.

I hope you can get the better running time back again!

About those core material, In Luc's video I saw a pair or so of those yellow cores?  Don't they have any markers on them giving and indication of what they might be, or a fabric mark or so?

Note also that Luc used much weaker Grade N35 magnets.

if you see JLN site: http://jnaudin.free.fr/2SGen/indexen.htm#hysteresis , and look at the 'NO MAGNET' and 'WITH MAGNET' pictures, that is what you may want to get, *but* the 'with magnet' should leave some space and not totally have a flat hysteresis [because you will going to put some energy in the coil still], however, this 'little bit' is as of now still trial and error yet.

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NextGen67

[HarryV]

Hmm, I'll keep it short. Would the motion of the magnet not require energy? I mean swapping it back and forth can't be done for nothing... So imagine you clamp the magnet to the coil, and effectively prohibit physical movement of the coil... Now there happens some kind of pressure, since the fields still try to push each other of. Now if the magnet is tight and can't move, what happens with the energy that normally moved it? The magnet won't give way.. and *what* is actually pushing this magnet *what* caused the field that seems to push against the magnet.

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The spacer between the coil and the magnet provides the push. You can think of the spacer as a kind of spring. It gets compressed slightly by the magnet when the pulse is off due to the magnets attraction to the core. The spacer expands when the pulse is on because the core's attractiveness is reduced.  See my attached concept diagram. The magnet placement and the flatter coil help to maximise the difference in attraction between the on and off states. (edited)

[NextGen67]

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The spacer between the coil and the magnet provides the push. You can think of the spacer as a kind of spring. It gets compressed slightly by the magnet when the pulse is off due to the magnets attraction to the core. The spacer expands when the pulse is on because the core's attractiveness is reduced.  See my attached concept diagram. The magnet placement and the flatter coil help to maximise the difference in attraction between the on and off states. (edited)

You realize that the energy to vibrate the magnet is coming from what *we* put into it - right? And since it takes *work* to do the displacement of the magnet, we lose energy with it by such. The energy you receive from the magnet 'vibrate back' to the coil, is put in by *us* in the first place to 'vibrate away' it, and since it took *work*, what comes back is *less* than what we did put in in the first place.

because the core's attractiveness is reduced.

Which is because *WE* fed it with the energy to do so.

So, when the 'core's attractiveness is not reduced' anymore, you think that then we will receive a gain in energy, because the magnet *would* inject energy [by moving back to the core again]... But this energy is the one that is has *cost* us to make it less attractive in the first place [minus the losses, because *work* has done]. See what you have achieved as a temporary storage... you store something, and then a little later you receive it back again [minus some energy because it has cost some of that to do the *work* to enable storage].

Instead now look at it like this:

Imagine this: You push hard against a 500Kg stone and the stone does not move [because it is to heavy]... The *work* done [you pushing], *must* go *somewhere*.... Would it in fact not be *you* who would move instead ? ... Ok, now translate this fact back to the magnet and core

Look at the scope shot I included earlier, and find the places where the magnet *would* 'vibrate up' , and places where it *would* 'vibrate back'.... Interesting isn't it?

Besides the bump, between the up and down '*would be* movement' of the magnet (along it's time line), where it *would be* coming down till it finally is back in start position [the horizontal duty cycle length part, off phase now!], see what is happening there in the scope shot? Even more interesting.. isn't it.... *that* is where the 0.005 mW seems to come from.

The scope shot I refer to: http://www.overunity.com/index.php?topic=8892.msg233528#msg233528

Edit: This might also explain *why* it is so extremely important to have the *exact* [well as exact as possible] 'tuning' for the resonance... Because if the magnet it's *would be* movement was not *exactly* in line with the coils behavior, there would be no gain [which is clearly happening as Luc shows when he de-tunes the coil].

Edit2:

The question is does the energy required for rotation equal or exceed the energy of the induced current due to the motion of the magnets. If it does, then it is not overunity.

Well, I'm a bit reluctant to say it so bluntly, but yes, looking at the scope picture, it has -to me- undeniable AE properties -very small- but nevertheless there ! (as a side note, even more remarkably the same as Steorns one!... it is a copy actually time line wise seen).

(I use the term AE[Additional Energy] instead of OU, meaning OU=energy from nowhere, thus created, while AE comes from *somewhere* other than what we fed into the device)

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NextGen67