Mostly Permanent Magnet Motor with minimal Input Power

[gotoluc]

Again, you are welcome.


My take? just if we want to know how things work this is a valid experiment. Please see my reply to synchro.


I had seen a bit of that video but didn't find it to definitive.


Ron

Simple enough of an answer

Yes, the video doesn't prove anything, what I found interesting is the mix of poles.

Luc

[i_ron]

So, what's your take on why an energized coil has all those pole domains compared to a magnetized bar or a permanent magnet?

Luc

Luc and all, my apologies to the group for the misinformed information I have posted. Unfortunately I can't delete it as the 'modify' button has expired. Please just disregard my previous posts.


Many thanks to Mile High for the clear and precise explanation of what I was seeing.


Ron

[tinman]

Ron
The picture you posted (below) is incorrect in saying the point of zero magnetism. The center of a PM is where the strongest concentration of magnetic fields exist-this is the strongest part of magnetism within the magnet,not the weakest.

I can also back up my claim with a simple test for all that think otherwise. Take two magnets of the same type and shape-lets say two rod magnet-->3/4 in diameter x 1 inch long. Now join the together(north to south) so as they become one complete magnet that is now 3/4 in diameter x 2 inches long(any size will work of course). Now you have one big magnet,and the center will be this bloch wall you speak of(point of weakest magnetism-so the picture says). OK,so now pull them apart,and see just how weak that point of no magnetism is. You will see from this simple experiment that your picture is completely wrong.

The other error you have made(looking at your diagrams a few post back) is assuming that there is a bloch wall in an air core coil.Bloch walls are only formed within the core material of an electro or permanent magnet.They do not exist in an air core coil/electromagnets. What you are calling the bloch wall is only the transition point of fields-the strongets point of the magnetic field.

[MileHigh]

Ron:

I annotated your drawing and attached it here.  In position 1 the magnetic field comes in at the "top" of the hall sensor (where the black band is).   So in your interpretation you are calling that "South" because your sensor is telling you flux is coming in the top and going out the bottom of the sensor.  You say that flux going in an "up to down" direction is "South" so you label that part of the coil "South."

Likewise in position 2 you see flux entering by the "bottom" of the hall sensor so you call that "North."

The reality is what you see in the annotated sketch.  There is NO "North" or "South," there is just the convention that we have adopted that says "flux direction coming towards you" is "North" and "flux direction going away from you" is "South" when you position yourself above or below the core in your sketch and you look towards the core.

I don't know if you can understand that but your drawing of the cross section of the coil core with the polarities at each corner of the cross section is completely wrong.  The reality is the orange lines of flux with the directional arrows as I have drawn them out.  There is NO true "North" or "South" there is just flux direction as per the convention that we have defined.  All that "North" and "South" really mean on a bar magnet is that flux is "exiting" from the "North" end of the magnet and "entering" at the "South" end of the magnet.  It's a  just a naming convention.  In reality the flux lines are closed loops with no "start" or "end" or "North" or "South."

The only thing the hall sensor is showing you is the amount of flux and the direction of the flux.  It's up to you to make sense of that information and right now you clearly are not making sense of it and you are drawing conclusions and making statements that are wrong.

A stack of cylindrical magnets will line itself up with the field created by the coil.  You are stating "how can the North of the stack of magnets be attracted to the "North" part of the coil?"  The answer is that there IS NO "NORTH" PART OF THE COIL.  Repeat, the cylindrical magnets simply line themselves up with the field created by the coil.

This madness, this endless spinning and grinding and arguing and getting nowhere, could be remedied if you locked yourself away in a room for one week with a determination to understand magnetic fields and to understand how magnetic fields interact with ferromagnetic materials.   Then you will be able to look at a relatively simple setup and nearly instantly be able to visualize and understand what is going on.

[hanon]

Hi,

I have found another device based on magnetic repulsion. It is called Gap Power.

The device consists of two lateral groups of permanent magnets and one intermediate permanent magnet in repulsion mode. It has two lateral coils with are fed with pulses in order to act as "magnetic switch" of the lateral permanent magnets field. The idea is to block the magnetic field of each group of lateral magnets: while one group is pushing the other is blocked. Then the action is reversed and the intermediate magnets is swung back and forth. The author states that it is an overunity motor. He calls the effect as Magnetic Amplification and Neutralization.

A video:

https://www.youtube.com/watch?v=fnWuPzAKigs

Regards