Latest: No back torque generator.

[gravityblock]

I'm attaching a PDF file that I created showing results of the different relative motions on a homopolar generator.  I know this information is on wiki and is nothing new, but I added notes on each individual setup and simplified the layout. 

The current will flow in the external circuit opposite to the disc with a net voltage and current, when there is relative motion of the electrons between the disc and external circuit.  A pole reversal of the field over a small region of the disc will also provide relative motion of the electrons between the disc and where the small area of the inverted magnetic field is located.

No new physics is required for current to flow in this setup.  Only need to understand the underlying principals of its operation, which is the electrons must have relative motion to each other, either on the disc or between the disc and external circuit in order to have a net voltage and current.

The magnetic flux is conservative and this is the reason for the inverted magnetic field over the area where the magnetic material has been removed.

Yes, the inverted field does create a non-uniform field, but the non-uniform field is only changing in time where the inverted field is located to create an orderly path for the electrons to flow relative to the rest of the disc with a net voltage and current.

The magnet will remain stationary while the disc is rotating in order for the non-uniform field not to embrace the entire circuit.  There will be no back torque, since there is no relative motion between the disk and external circuit.  There is only relative motion between the electrons moving in the disc and the electrons moving in the disc where the inverted field is located.

@broli:  The configuration I am currently talking about is not much different than the configuration you suggested in the first post of this thread and Yucca's experiment is incomplete and doesn't prove the concept is wrong.   

[gravityblock]

Here's a drawing on how to extract the current using one slip ring for both the axis and the rim of the disc.  The slip ring will be located on the axis.  This can only work if the wires on the axis and the rim rotate with the disc (external circuit rotating with the disc, located over the inverted magnetic field). 

The slip ring in the drawing is raised above the disc for illustration purposes only.  The wire on the rim probably should enter the side of the slip ring instead of the bottom of the slip ring that is shown in the drawing.

[gravityblock]

Let's close the loop so we can achieve Over-Unity.

After we extract the current that was generated from the disc using the one slip ring in the previous post,  we'll send the unused current to the other side of the magnet.

On the other side of the magnet we'll have another disc.  This disc will be used as a motor while the other disc is used as a generator.  The external circuit connected to the motor's disc will also rotate with the disc.

So, the setup will be a slip ring on the axis for the motor disc, next a magnet with an inverted field on bearings that is held stationary as the discs are rotated, next a generator disc, then another slip ring on the axis for the generator disc, a load that is connected to the leads of the generator's slip ring, then leads running to the other side of the motor's slip ring to dump the unused current that was generated to complete the circuit and close the loop for OU.

The homopolar's power output goes up by the 4th power of increases in the rotor radius while its input power requirement goes up by the square thereof.  As long as we don't use more energy than the power requirement of the discs, then it won't slow down.  There is no back torque in this system.  The RPM in this system will continue to increase if there is more energy being put back into the system for the given input requirements of the discs.

In order to maintain a certain RPM, we will need to use the excess energy that is generated either in our load or to break the circuit at given intervals until we are able to maintain the RPM.  It may not even be necessary to use the other side of the magnet in order to be a self-runner.

[gravityblock]

Here's how it may be possible to close the loop for OU without using the other side of the magnet or an inverted magnetic field.  I will first give a brief theory behind this.

Do not confuse the electro motive force (EMF) with voltage.  The EMF is the work done in order to separate the charges.  The voltage is what moves those separated charges.  The voltage is similar to the EMF but is opposite in polarity or direction.

When the disc and external circuit are rotating together the disc is cutting the magnetic field of flux, thus there is an EMF which separate the charges.  This creates a static electric field.  There is no voltage on the disc which is opposite in polarity or direction to the EMF that is able to move those separated charges, so no voltage or current is able to be brought out of the system.  This means the system is an open circuit and has not been closed for current to flow.

Now, physics says the voltage is opposite in sign or direction to the EMF.  This is true in a closed circuit, thus we have positive and negative on each end of the terminals.  In the open circuit of the disc that I described earlier, we have the axis having one sign and the rim having the opposite sign.  When we connect an external circuit that rotates with the disc from the axis to the rim, then the external circuit will have the same polarity as the disc, so there is no voltage potential to move the charges. 

Relative motion between the disc and the external circuit provides the voltage potential to move the separated charges (even though one may be stationary, it is the same as moving in an opposite direction relative to the other, thus creating a voltage).  Increasing the rpm will increase the voltage due to a higher relative motion between the external circuit and disc.  Adding more brushes does not increase the relative motion between the two, thus the voltage doesn't increase.  This is the reason why all attempts to connect the rim in series to boost the voltage has failed because the voltage isn't generated on the disc, but is generated due to the relative motion of the disc and external circuit.

This gives us an unique opportunity to provide a voltage potential, such as a battery or charged capacitor that is outside the system to move those charges that the EMF separated on the disc which is not in opposition to the disc and external circuit, since there is no relative motion between them. 

Now, if we connect the axis to a terminal on the battery and connect the rim to the other terminal on the battery using the correct polarity, we will have a voltage potential and current will flow.  The generator disc will separate the charges, and the battery will move those charges without any relative motion between the disc and external circuit.

Since the power output is higher than the input requirements for the homopolar discs, it will provide more power out than what is required to create the EMF or rotation of the disc.  This can only be done when both the disc and external circuit are rotating together.

[gravityblock]

Hello all,

Sorry to keep banging on about homopolars in general, I know this thread is about Brolis idea, but I thought you'd all like to hear about my experiment.

I tried the experiment of spinning The magnet disk along with the takeoff and load. Took me a few tries and a few flying capacitors to get it balanced well enough. I just stuck the cap to the axle using super glue.

Magnet: N52 Nickel Coated Neo (diam=38mm thick=6.5mm)
Electrolytic cap: 6.3V 1000uF
Resistor: 100k metal film

Outer rim is connected to the -v cap terminal.
The magnet axle is connected via the resistor to the +v cap terminal.

In this configuration the cap will discharge at about 2mV per second.

I discharged the cap by shorting and then did a spin up to 3000RPM for 2 minutes.

I noticed no difference in the capacitors charge after measuring as soon as it stopped. spinning, GUTTED!

I wondered if the centrifugal force made my rim connection go open circuit as it's only bound on with tight sellotape so I also tried precharging the cap to 300mV and then left it to discharge for 30 seconds. Tried this spinning and static, same discharge rate.

Did you try to spin the pre-charged cap both CW and CCW, then test if the discharge rate is the same?

The reason I ask this, is if the cap has the same polarity or direction as the EMF, then it will have the same discharge rate.  If the cap has an opposite polarity as the EMF, then the discharge rate should be different.

Please test for me.  If I am wrong about this, then my last post is wrong also.


Thanks,

GB