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

[leonirz]

I think you got most of that correct, at least the main idea.  I can't believe more people aren't catching onto this.  They have shown us that the Orbo is an OU device in many different ways already.  I will list them.

1)  It runs in the same direction regardless of the input polarity from the battery.

2)  The energy gain in inductance.

3)  No CEMF.

4)  The voltage and current doesn't drop when a load is put on it (No BEMF due to no CEMF inducing a current that is in opposition to the EMF of the battery)

If you have a BEMF, then you don't have OU because this means you have a CEMF.  It's that simple.


GB

Yess I agree.

Then, more some considerations about ORBO:

1) When the trigger is fired (optical sensors) send the command to an electronic circuit to create an electrical pulse.
This pulse should always be the same length.  Regardless of motor speed. For thus the impedance always reacts with the same intensity on the current. But it can be repeated many times until you release the trigger (optical sensors) with a train of pulses.

2) Magnetic bearings help to reduce the mechanical losses. And if you want that a machine to work independently, for very long time, she should not show mechanical wear. Therefore, ORBO is using magnetic bearings and optical sensors (instead ball bearings for example, or reed switch).

[teslaalset]

Hi teslaalset,

One important thing I did not see in your diagram was that the magnetic field from Metglas core rotates as it tries to align with the magnet, but when the coil current is turned on the Metglas cores magnetic field easily changes such that it forms nearly a perfectly close loop near full saturation. IMO that's where the excess energy effect is caused  by because it requires very little energy to change the Metglas *longitudinally* annealed core field to closed loop, which decreases the magnets attraction to the core. So IMO it's not all that important if the core remains nearly saturated the entire time, but where the dipoles are pointing and where they change during the entire cycle.

Paul,
I didn't catch your insights.
From what I understand is that the dipoles in the cores change from 1 to 4 as shown in below figure, right?
Are you saying that the permeability is changing as a function of dipole direction?
Maybe you can visualize what you intend to teach us here?

[Bruce_TPU]

Hello all,

Surface field gauss is what we are interested in, NOT BrMax gauss.  The following is a list:

http://www.kjmagnetics.com/magnetsummary.html

Define "surface field Gauss":  "Surface Field (Surface Gauss) - The magnetic field strength at the surface of the magnet as measured by a Gauss meter.  A comprehensive table of the surface field for all of our stock magnets is available here"

5000 gauss or as close to that as possible for the "surface field gauss" is what we need.  Perhaps the following one: 

http://www.kjmagnetics.com/proddetail.asp?prod=D63-N52

Cheers,

Bruce

[PaulLowrance]

[edit: lumen, that is not a MAGAMP core. You can tell by the last letter, which is "F", which means it's a flat loop, not square loop. That has a permeability of 80000, not 1000000!]

So what is the current best selection for the Metglas cores?
I found these at a surplus site.
http://www.surplussales.com/Inductors/FerPotC/FerPotC-6.html

Nice find lumen! and thanks for sharing. That photo of the Metglas core looks just like the Steorn photos, nice and thick. That looks like a MAGAMP, as the part # starts with MP, but maybe we should contact Metglas to be certain.

If you want the 1 million permeability cores, then it must be MAGAMP. Metglas sells various types of 2714A cores, some are transversely annealed, some are longitudinally annealed.  MAGAMP cores are longitudinally annealed.

That's not to say the transversely annealed cores are not worth a try. In fact, I'll be trying my Metglas transversely annealed if all else fails. 


 

[PaulLowrance]

The MP2510P4AH is what I ordered.  $12.00 USD each.

http://www.metglas.com/products/page5_1_6_4_1_b.asp

Hi Bruce,

Is that price quote from Elna, or Metglas, or somewhere else?  My MAGAMP's, bought in 2007, were $2.65 each at 0.82" OD. Of course your core is a lot larger in all dimensions.