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

[billmehess]

Thats right!

[MileHigh]

Electronics 101:  V = Q/C.

In this case, Q = ((starting charge) - (current x time to run motor) + (current x time from the energy return))

If the energy returned from the Steorn motor is greater than the energy required to run it, the cap voltage will go up.

If the energy returned from the Steorn motor is less than the energy required to run it, the cap voltage will go down.

A capacitor is essentially 100% efficient in absorbing the energy returned from the motor whereas a battery is not 100% efficient.  Therefore a capacitor would be a better energy source for demonstrating a self-runner than a battery.

Is a capacitor exactly the same as a battery?   No, it's as simple as that.

It's not the same as a battery, it's better than a battery for this application.

MileHigh

[billmehess]

100% correct  MileHigh, charge up a cap with the battery then disconect the battery from the system. The motor will discharge the cap and the device will slow down and stop.This is so obvious a 5 year old should be able to see it.

[gravityblock]

And still I wonder, Why did Sean find it necessary to reverse the polarity to the coils?

Just to show it would run the same direction with reversed polarity?
Or did it need to be reversed to operate correctly?

Things are either missing, or they just do things to mislead people.

Reversing the polarity will not reverse the rotation.  Only way to reverse the rotation is to adjust the opto.  The rotor magnets will attract to the toroid core from either direction.  The opto allows the rotor magnets to pass the toroid core by signally for a pulse.  Reversing the polarity of the current doesn't change the point in space where the opto signals for a pulse. 

This may suggest the opto signals for a pulse when the rotor magnets are slightly off-center on one side of the toroid core.  Want it to reverse it's rotation, then adjust the opto where it signals for a pulse slightly off-center on the other side of the toroid core.  This allows it to gain the most momentum and torque out of the system because it's firing when the rotor magnets are slightly passed the toroid core due to it's momentum.  Fire it too soon, and you won't capture all of it's potential momentum.  Fire it too late, and you will lose some momentum.  Timing of the pulses is critical in this setup.


GB

[k4zep]

It's a battery running a motor, replace the battery with a cap and it will run down and stop, it's really that simple.

A straight forward opinion.  Just to take the devils advocate, Bill What if it doesn't stop and what if it doesn't run down?? 

I have to say that over the years I have grown to hate ANY pulse OU device sustained by a battery because they will run you all around the barnyard but eventually all throw you in the pigsty....As all have stated that have even a slight clue as to the operation of pulse motors you simply replace the battery with a Cap. of low enough impedance to drive the coils and the capacity to give just a few pulses, run it up to "speed" on aux. power supply, then disconnect supply, run on cap only!.  IF the device is OU, it should run and maintain on the Cap. For every power pulse and charge reduction on the cap, there has to be a generated/generator pulse that is greater or equal in charge. Thats it, no more, no less.  2 pulses(one innie and one outie) into that high dollar scope integrating the total power in and out of the battery or Cap. The answer should be there. Forget the blarney, forget the BS, just do it.  One of the Tec's helping out there must know how to use that dam Cadillac of a scope!!!! All this could be demonstrated in 3-4 min in a clear concise and simple video.......All the rest is window dressing and loving to hear themselves talk.