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

[infringer]

Even if this is a pulse motor and some wacky measurement look at the video when you slow the motor down the voltage and current remains...

Unless this part is the illusion which I doubt cause if you slow something down for seconds at a time pulsing or not it should be visible on the scope.

With that said I seem to believe that Steorn has a valid technology and it may also be possible that Tensol Kola may have had something as well thanks to how skeptic we have become I think it is possible that we tend to discount some things to the extreme!

The joule thief was a great find but people throw dirt at that one too rather then make flashlights to run with them....

Even if it this thing is not over unity people please realize that this may be the next step forward...

DO NOT I REPEAT DO NOT LET THIS DIE!

[MileHigh]

I tried a search on the CNN web site:

"Your search Steorn did not match any documents."

They aren't exactly big news.  I love all the Lucite.

They did not use a capacitor for the demo because that would have been the Steorn Super Fail, ending up on the YouTube Failblog page.

MileHigh

[hartiberlin]

"they just saturate the ferrite cores with very high input current pulses"

4 coils , it is possible with only 1 AA battery?

Current and voltage starts at different time it is usual?

The ferrite core it is not visible , my be there is an hidden horizontal coil inside?
more in line with his philosophy

These are normal ferrite core coils as you can see from the high resolution pictures
posted.

The function is this:

If the ferrite coils are not energized, the magnets in the rotor attract the
stator ferrite cores of the coils.
the rotor is accelerated into the direction of the ferrite cores.

At the time the rotor magnets reach the ferrite cores of the stator coils,
the coils are energized for a few milliseconds, so the ferrite cores
get saturated and their muR=1 then, so these ferrite cores act then,
as if they would be air and thus the rotor magnets don´t see any
ferrite anymore and can rotate freely on.
Then the coils are switched off and the rotor magnets again attract the ferrite
from the next position and so the rotor can rotate on and gets accelerated
and produces torque.

Now to scale this effect up,it only needs bigger and stronger rotor magnets
and optimized toroidal ferrite core coils,where the inputted energy can be recycled.

If you go for about 1/5 tau=LR only switchon time,
you will almost have no ohmical losses in these coils and can
recycle about 90 % of the inputed energy via BackEMF extraction.

( Please remember the difference between BackEMF and CounterEMF !
This motor does not have CounterEMF. But it does have BackEMF,
which is the same like flyback coils, who generate a voltage spike,
when they are switched off. BackEMF comes from the stored magnetic
energy of the coil and core and can be recycled, which is also the case over here.

CounterEMF is the normal induction for instance in a normal DC motor,
where the movement of the coils in a magnet field are inducing a counter voltage versus
the driving voltage, so the total driving voltage is always less than the inputted
supply voltage. In the Orbo motor we don´t have such a CounterEMF !)

So with an optimized design with BackEMF recycling you only need about 10% energy input
of what Steorn has shown now and can get the same torquexRPM= output power
out of it.

[Omega_0]

( Please remember the difference between BackEMF and CounterEMF !
This motor does not have CounterEMF. But it does have BackEMF,
which is the same like flyback coils, who generate a voltage spike,
when they are switched off. BackEMF comes from the stored magnetic
energy of the coil and core and can be recycled, which is also the case over here.

CounterEMF is the normal induction for instance in a normal DC motor,
where the movement of the coils in a magnet field are inducing a counter voltage versus
the driving voltage, so the total driving voltage is always less than the inputted
supply voltage. In the Orbo motor we don´t have such a CounterEMF !)

Stefan,
Lets not confuse BEMF or CEMF, both are a form of induced EMF opposing the original current flow. It seems that in this case there won't be any BEMF/CEMF (as there is no interaction with magnets), but you will have something called self-induction.

http://www.ndt-ed.org/EducationResources/CommunityCollege/EddyCurrents/Physics/selfinductance.htm

I guess, you mean self-induction, when you say that there is a BEMF in the coil. Just trying to clear it up. Self-Induction is all we have when we just switch on/off a coil in absence of any other fields or materials.

So, it seems here that they are simply switching on/off the ferromagnetic property of an iron core using pulses. Surely, the battery will drain, no doubt, because of heat losses in flipping of ferromagnetic domains and a bit of resistance/radiation losses etc. The only thing that is charging the battery back is only its own self-inductance. You can make that 99% efficient.

If they can show (or anyone here) that the energy output of the rotor is greater than the energy loss of the battery in say, 1 hour, they have OU.

If anyone on this forum is doing any tests, please post the results, I guess the secret is out now :-)

[k4zep]

These are normal ferrite core coils as you can see from the high resolution pictures
posted.

The function is this:


So with an optimized design with BackEMF recycling you only need about 10% energy input
of what Steorn has shown now and can get the same torquexRPM= output power
out of it.

Hi Stephan,

I have been following the YouTube video #1 from Steorn but pulled my questions on that site as it seems that they give out very little technical information.  The video answers a lot of questions and I suspect your analysis is very correct.  There very obviously is BackEMF and little or no CounterEMF due to the toroidal coil construction. 

I had lots of problems with the design at first as I know that there is virtually no magnetic field external to a close coupled toroid coil and could not figure out how it could drive the rotor.  Finally realized it was simply a Adams motor (I assume everyone knows what a Adams motor is and how it works, if not Google it) with NO CEMF due to the toroid coil design.  It was also immediately apparent that you could recover most of the BEMF to a fast recharge the battery/supply with surprising results. 

IF you put a bridge rectifier across the coil network and drive the coils with a voltage low enough to not turn on the diodes during the pulse  (around 1.4V for a 4 diode bridge or higher if multiple diodes used in the legs of bridge) you then can recover the BEMF back to the battery.  You end up with resistive losses and very short BEMF pulses if diodes are fast enough and battery accepts a fast pulse recharge.  Thus you end up with a very efficient motor, Not powerful but super efficient in its own funny way.  Their estimate of COP around 3 for the power input vs. rotor mechanical output after all is accounted for is probably close and as seen in the Adams motor.  A standard pulse generator only has to make up for the actual resistive losses (10%?), charging losses (20-40%) air drag and bearing losses and you have a OU or super efficient device. A Super Cap should be much more efficient as a power supply than the battery used as there would be no recharging losses in the Cap. 

That they have not been able to utilize a solid state switching device is a puzzle considering the amount of money spend on this device.  There are many switches that have a very low ON resistance, are very fast devices for switching efficiency and fast recovery diodes that should work with no problem.  Anyway, I'm having fun working with this new twist.  It will take time to build one.  When you use NEO's with close coupled fields, the device must be robust to say the least. 

Happy holidays to all,
Ben