STEORN DEMO LIVE & STREAM in Dublin, December 15th, 10 AM

[Airstriker]

FINEMET core’s magnetic properties, “B-H curve” can be controlled by applying a magnetic field during annealing.  There are three types of B-H curve squareness with the Finemet cores.

1) H type: a magnetic field is applied in a circumferential direction during annealing.

2) M type: no magnetic field is applied during annealing.

3) L type: a magnetic field is applied vertically to the core plane during annealing.

On page 2 of the Finemet intro PDF brochure, http://www.overunity.com/index.php?action=downloads;sa=downfile&id=362 in regards to the "L type", you will see the Bsat to be 0.57T when the drive field is H_max=8 A/m while the Bsat is 1.23T when the drive field is H_max=800 A/m.

There are three types of B-H curve squareness; high, middle,and low remanence ratio.  With this material, we'll be dealing with hard disc drive tolerances, does this ring a bell?


It is no mistake.


GB

Nice find GB. So the Bsat can vary between 0.57T to 1.23T depending on the FINEMET core type. Anyway I don't really think we need it for the replication project. 1.23 T is too much and 0.57T is just fine - so metglas would be just fine.

As for the fence wire coil project - what is the purpose of it ?? I don't really find in it anything to do with ORBO project (if there is any sense in it at all (other than being "cool")). So I would simply suggest setting up a new thread with it.

[woopy]

Nice find GB. So the Bsat can vary between 0.57T to 1.23T depending on the FINEMET core type. Anyway I don't really think we need it for the replication project. 1.23 T is too much and 0.57T is just fine - so metglas would be just fine.

As for the fence wire coil project - what is the purpose of it ?? I don't really find in it anything to do with ORBO project (if there is any sense in it at all (other than being "cool")). So I would simply suggest setting up a new thread with it.

Hello AS

who are you ??

perhaps a fantastic judge of what is good and no good for the ORBO ??

So long i know , ABSOLUTELY NOBODY  and surely nor   AS    knows how exactly the ORBO works   (if it WORKS) or do i miss something ??

so i propose  very *COOL " protos "      but WORKING protos      with some measurable results     not very good     but results  which is not the habits of a lot of people here !!!

And I AM POLITELY asking  to your very HONORABLE person to make some critics and proposal  not to simply eject it as a POUBELLE

so long as i have understood the ORBO   IS     an     ATTRaCTION  motor  with  very low BEMF or eventually no BEFM or do i miss something more

and  what i am to do now is simply to propose  different possibilities to get this attraction capabilities . With of course very differents results on the     yes or no      BEMF and which core material  to use !!!
.

So as mentionned earlier if this quest DOES disturb  here      as Mister AS  suggest       ,  i am of course ready to make a special topic for this  "cool" technology .   


POLITELY

Laurent

[teslaalset]

Browsing through the MetGlas and FineMet applications, one common application mentioned is magnetic amplifiers or in short MAG AMPs.
Simple introduction: http://en.wikipedia.org/wiki/Magnetic_amplifier.
If you look at the principles of magnetic amplifiers you can see the resemblance with Orbo. Instead of the control DC current used in magnetic amplifiers the external magnetic field is applied.
Magnetic amplifiers amplify current.
There's lots of stuff on the internet available on MAG AMPs.

[edit]
Looks like here's also the basis for the SSOrbo, the solid state version of Orbo.
If you put a permanent magnet accurately positioned next to the toroid coil this substitutes the DC control of a MAG AMP.

[0c]

Is it a continuous strand of fence wire, or multiple cut strands?

Peak or A?

Have you tried recovering the spike energy (flyback)?

Have you tried measuring the available voltage/current in the fence wire?

0c

-yes it is a continous wire  (plain) with 3 mm  diameter fence wire

-the voltage go up at the first revolution to about 1 A and than rapidly go down to at max speed 0.78 A. and stay there. (average)

-the kickback spike is only about 40 volts  and i can not light anymore the neon through the 2000volt 1 farad cap as per the previous version. i enclose a picture with only 1 led just for fun.

-I don't see how i can capture the voltage through the core. As you see the core is completely isolated and wounded. Can you be more precise on this point please ?

any propositions for next test ??

thanks

Laurent

Laurent,

The steel wire should be wound around several turns BUT must be insulated, you can use strips of newspaper around the wire if you need to so the turns of fence wire don't short out. It will serve as ferromagnetic core material and will also become a secondary generator coil. The ends of the wire must pass through the copper wire toroid.

Each pulse fed to the copper toroid wrapped around the fence wire will also induce a current in the steel fence wire. You can measure the voltage from the inner coil separately from the outer copper coil and see what happens when you connect a load across the inner core.

0c

[gravityblock]

Nice find GB. So the Bsat can vary between 0.57T to 1.23T depending on the FINEMET core type. Anyway I don't really think we need it for the replication project. 1.23 T is too much and 0.57T is just fine - so metglas would be just fine.

In the conventional soft magnetic materials, “whose grain size is far larger than 1μm”, it was well known that soft magnetic properties become worse and coercive force increases when crystal grain size becomes smaller. For example, coercive force is thought to be inversely proportional to D.  Therefore, main efforts to improve the soft magnetic properties were directed to make the crystal grain size larger and/or to make the magnetic domain size smaller by annealing and working.

However, FINEMET demonstrated a new phenomenon; reduction of grain size, “to a nano-meter level”, improves the soft magnetic properties drastically.  In this nano-world, the coercive force is directly proportional to D on the order of D² to D⁶. This is absolutely contrary to the conventional concepts for improving the soft magnetic properties.

In this nano-world of FINEMET, the coercive force is directly proportional to D on the order of D² to D⁶, while in the conventional soft magnetic materials the coercive force is thought to be inversely proportional to D.  It sounds like FINEMET is much more softer than the Metglas.

If Metglas doesn't have the Aharonovâ€"Bohm effect and is not as soft as FINEMET, then the Metglas may not be just fine.  Don't forget, the bread crumbs on researching the Aharonovâ€"Bohm effect has led me to the FINEMET.  I also think the Aharonovâ€"Bohm effect is the Orbo effect.  It appears FINEMET is a very soft material, which may be what Steorn is referring to when he says a soft material.

IMO, the FINEMET is a better candidate for the Orbo effect than the Metglas.  I've been wrong many times, but FINEMET does look more promising to me.  Neither one needs to be ruled out, and both needs to be tested.

[Edit:]  The information contained within this post can be found on Page 8 of the "Intro Finemet brochure" that I provided a link to in my previous post.


GB