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

[hartiberlin]

Your analysis is correct until the rotor magnet reaches the
toroid coil.  At this point a pulse into the toroid coil saturates
the toroid core since it exceeds a certain ampere-turns
rating for that particular core material and size.  When the
toroid magnetic core saturates, it becomes what I call
"synthetic air" as all its magnetic properties disappear.
Since the rotor magnet is not attracted to "synthetic air"
it continues to rotate with no braking.  The magnetic leakage
from the now air-cored toroid is small.
Once the rotor magnet is far enough away from the toroid,
the pulse is stopped and the toroid core returns to being
magnetic material.

In my opinion, this demo is completely different from all
else Stoern has done until now.

In effect, this motor is alchemy.  Instead of turning lead into
gold, it turns magnetic material into air.[/b]

Hi Earl,
yes, it seems you are right,
they just saturate the ferrite cores with very high input current pulses
and then the cores act just like normal air , so uR=1 and not anymore
1000 or so..what ferrite normally has..
This saturation probably needs pretty big currents and I wonder how
these current pulses could be decreased maybe via higher turn number coils.
So it would probably be better to build lower RPM motors with more torque,
as then you can use higher turn number coils with a higher tau=LxR and thus lower switching frequencies
but bigger size and more torque to compensate for the lower speed.

Should be pretty easy to scale this effect up.

So it seems this is a real Lenzless counterEMF-less motor.
Regards, Stefan.

[Earl]

Hi Earl,
yes, it seems you are right,
they just saturate the ferrite cores with very high input current pulses
and then the cores act just like normal air , so uR=1 and not anymore
1000 or so..what ferrite normally has..
This saturation probably needs pretty big currents and I wonder how
these current pulses could be decreased maybe via higher turn number coils.

Since it is Ampere-turns that saturate, with low turns you need higher Amps and with higher turns lower Amps.  As always there is no perfection, only a good compromise.  The more turns, the slower the current ramps up, so it takes longer time to saturate.

So it would probably be better to build lower RPM motors with more torque,
as then you can use higher turn number coils with a higher tau=LxR and thus lower switching frequencies
but bigger size and more torque to compensate for the lower speed.

Should be pretty easy to scale this effect up.

So it seems this is a real Lenzless counterEMF-less motor.

No, this motor has nothing to do with Lenz effect or Lenz-less operation.  Only a motor using current to attract or repel a magnet is subject to Lenz's law.  This motor does not use current through a coil to attract or repel a magnet, so it can *NOT* be said to be a Lenz-less motor.

It makes *NO* sense with this motor to talk about Lenz's law, there is no connection at all.

The only thing to do with this motor is measure power input consumption and power output and see if the cost of saturating the core is more or less than the output power.

I think we should all stay cool and calm until some valid measurements are made and make no conclusions now.

Regards, Stefan.

Regards, Earl

[PaulLowrance]

Someone put up a youtube video that includes more of the Talks. The official steorn youtube video does not include any of the questions afterwards. The following video includes at least one question & answer,

http://www.youtube.com/watch?v=xl5ZxPkGxmQ

Here Sean talks about dark matter. 

You might want to download this video in case Steorn has the person remove it.

[ramset]

Paul

Thanks for that info !!

http://www.youtube.com/watch?v=xl5ZxPkGxmQ

Chet

[Staffman]

Regards, Earl

So, it is cancelling the ferromagnetism of the core correct?