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Author Topic: Magnet force shield  (Read 90113 times)

Floor

  • Guest
Re: Magnet force shield
« Reply #90 on: March 19, 2017, 02:57:11 PM »
Here is a design for neutralizeing the magnetic force,
with an attraction based output.

These designs, devices and inventions are given into the public domiain.

note...since these are devices intended to give OU, one can reasonably assume they are
not previously pattented ?

                       floor

Floor

  • Guest
Re: Magnet force shield
« Reply #91 on: March 19, 2017, 03:05:08 PM »
Note...

I hve not put this last design (shielding with attraction as output) on the bench for testing yet.

           regasrds
                    floor

dieter

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Re: Magnet force shield
« Reply #92 on: March 19, 2017, 03:20:59 PM »
Thanks for sharing these very clear drawings. I've seen the vid, which is impressive. Also in the light of Luc's latest measurements, very promesing.


I wonder how would you implement the work cycle in a rotor, or are you preferring a piston design (which would be much simpler I guess)?

Floor

  • Guest
Re: Magnet force shield
« Reply #93 on: March 20, 2017, 03:12:03 AM »
Hi Dieter

         I'm still looking at the design @

http://overunity.com/17070/all-magnet-motor-td-based/

         I have some of the materials for a test build.
         
         I need to wet cut some ceramic magnets on
         the diamond wheel.
         
         Modify / cast some plastic gears (2 crown and 2 pinon gears)

         But for now I'll stick with the linear motion sets.
...     
                              my  projects

         Installing some flooring (paid project).

        I would like to do a full measurement set for Gotoluc's design (scaled down) ....
        before doing measurements of any of my new designs.   
                                               But first I'll need to ...
  detail / ask Luc to  check out  the magnet start and finish positions for that measurement process.

        There is yet another 3 magnet interaction set I want to diagram.
       
        I want to redo / finish the next section of the "Magnets Motion and Measurement"
        book / topic...... how to integrate a magnet force that is changing with distance and
        how to calculate the work done as joules and so on ................

                         regards

Floor

  • Guest
Re: Magnet force shield
« Reply #94 on: March 20, 2017, 03:19:44 AM »
addendum

One more drawing for the attraction based output design....

        thanks Dieter
              floor

Zephir

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Re: Magnet force shield
« Reply #95 on: March 22, 2017, 07:37:42 PM »
Too bad that magnetic lines of force cannot be actually shielded permanently, only guided. Temporarily it's possible to achieve everything, but you must be pretty fast - faster than the speed of EM wave spreading in material given.

dieter

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Re: Magnet force shield
« Reply #96 on: March 25, 2017, 02:08:11 AM »
If I were about to measure the forces, I would first build a vertical version, containing a track for the shield magnet, sliding on soap or teflon. So the shield can be dropped in from above. Then the shield could also be suspended on a thread, hanging downd from a balance, containing a counterweight, so the gravitational weight of the shield can be reduced to eg. a few grams. Will it slide trough? How much weight is required. Adjustable track, so the optimal arrangement can be found. The push force of the stacks could be measured over a pulley. How much weight can it lift for the same distance?


Something like that.


Experimenting with a reluctance swith, I have just learned that iron "conducts" magnetism much better than a permanent magnet. You would think a PM in a gap of a core is inxreasing the permeability, but actually the opposite happens, esp. with eg Ferrite PM. Seemingly the can transport only a rather low magnetic strength, maybe limited by their own PM strength, way below saturated iron that easily reaches 2 Tesla.

dieter

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Re: Magnet force shield
« Reply #97 on: March 25, 2017, 02:17:31 AM »
Sorry about the typos. I can't edit it.

Floor

  • Guest
Re: Magnet force shield
« Reply #98 on: March 25, 2017, 06:14:34 AM »
Quote from Zephir

"Too bad that magnetic lines of force cannot be actually shielded permanently, only guided. Temporarily it's possible to achieve everything, but you must be pretty fast - faster than the speed of EM wave spreading in material given."

End quote

@ Zepher

I don't understand your statement.

Even a helmet struck with a base ball bat does not actually shield the wearer's head. The force is only guided,
      also  again
I don't understand your statement.
What does  faster have to do with this ?

              thanks
                floor
...
...
@ Dieter

Quote from Dieter

"If I were about to measure the forces, I would first build a vertical version, containing a track for the shield magnet, sliding on soap or teflon. So the shield can be dropped in from above. Then the shield could also be suspended on a thread, hanging downd from a balance, containing a counterweight, so the gravitational weight of the shield can be reduced to eg. a few grams. Will it slide trough? How much weight is required. Adjustable track, so the optimal arrangement can be found. The push force of the stacks could be measured over a pulley. How much weight can it lift for the same distance?

Something like that."

END QUOTE

   I do it like this @

http://overunity.com/14311/work-from-2-magnets-19-output-2/msg487779/#msg487779
.............................................................................
.............................................................................

QUOTE FROM Dieter

Experimenting with a reluctance swith, I have just learned that iron "conducts" magnetism much better than a permanent magnet. You would think a PM in a gap of a core is inxreasing the permeability, but actually the opposite happens, esp. with eg Ferrite PM. Seemingly the can transport only a rather low magnetic strength, maybe limited by their own PM strength, way below saturated iron that easily reaches 2 Tesla.

END QUOTE

I started this topic in 2013 but never got back to it.  I decided to work with the magnets only/

http://overunity.com/13354/perm-magnet-only-core-with-iron-shell-motor-coil/msg354318/#msg354318



Not worried about typos
                    regards
                         floor

dieter

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Re: Magnet force shield
« Reply #99 on: March 25, 2017, 08:29:45 PM »
That's some intetesting plans there, reads like a patent.


Of course, your test installation doesn't require my advice. When it comes to testing, I really use what's at hand, like wood, cardboard, glue and of course sticky tape. As long as it does the job.


But I wish I had the time, patience and resources to do that like in your pictures.

Zephir

  • Sr. Member
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  • Posts: 381
    • Reddit about Aether Wave Theory
Re: Magnet force shield
« Reply #100 on: March 25, 2017, 09:01:46 PM »
Quote
I have just learned that iron "conducts" magnetism much better than a permanent magnet

This is logical and it's how the magnetization curve of ferromagnetic materials works. The permanent magnet operates at the upper side of saturation curve, when the material already stops to behave ferromagnetically.

Quote from: Floor
I don't understand your statement.
It's (hopefully) explained here up to some point.

norman6538

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  • Posts: 587
Re: Magnet force shield
« Reply #101 on: March 26, 2017, 01:44:02 PM »
Here is a design for neutralizeing the magnetic force,
with an attraction based output.

These designs, devices and inventions are given into the public domiain.

note...since these are devices intended to give OU, one can reasonably assume they are
not previously pattented ?

                       floor

I love the drawings and tested 2 of them but got some unexpected forces that
do not agree with the implications of the drawings and the video you posted
here http://www.dailymotion.com/video/x5eg7kk_magnetshield-1_tech

Anybody else have results to report?

Norman

Floor

  • Guest
Re: Magnet force shield
« Reply #102 on: March 26, 2017, 09:04:43 PM »
@ Norman6538

Vague statements containing too little information (almost none and ....probably not even
10 % enough info) for me to really respond to, except.....

I'm not looking to play a masochistic / daddy role here.   I don't feel sorry for you! I don't belive
you need my help.  I'm not fond of  passive agressive / victim games.

....................
QUOTE from Norman 6538

"I love the drawings and tested 2 of them but got some unexpected forces that
do not agree with the implications of the drawings and the video you posted
here "  @......

END QUOTE

" I love the drawings"   

thanks......
...........................
" and tested 2 of them" 
 
                 BS
I am totally doubtful that your    "tests"  (which are by the way, once again un-presented) have any where near to a
reasonable degree of  precision and / or are valid as tests.  Sorry but I have not     ever    seen 1 actual measurement
taken by    you and then presented     on this forum... ever.  Don't know that you haven't ever, but I see that,
once again you are stating that you have done measurements, but,  present neither the methods,  nor those
measurements.    Not good Norman...

This is what I keep objecting to   your doing   on my topics.   Hello ?
.....................
"but got some unexpected forces" 

Which / what forces ?  no description is given by you, why ?

not "expected" by who ? you ?
..................................................
Can you define "force"... with out looking it up ?
.....................
"that do not agree with the implications of the drawings and the video you posted"

great ?  I'm not asking for yours any ones "agreement"  with any "implications" that I quote "drew, posted, videoed"...
.....................
Do it well and do it your self  ...  and please go away.
            best wishes
         floor

dieter

  • Hero Member
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  • Posts: 938
Re: Magnet force shield
« Reply #103 on: March 27, 2017, 01:50:35 AM »
@Floor, I ran it trough femm, this might be interesting. First image is with no shield (set to be air), second with shield according to drawings. Asymetry is weird, may be caused by asymetric surrounding air section. Probably just ignore it. Third picture shows approaching shield.


From what I see, there is indeed a tendency to create an area of low flux density. The reason why may be the high amount of field diffusion and superimposed compensation with the shield.

Floor

  • Guest
Re: Magnet force shield
« Reply #104 on: March 27, 2017, 03:32:29 AM »
@Dieter

     I'm going to

1. measure the work done to slide the "force shielding magnet" INTO an in between the
repelling magnets position (an input), starting from a distance of around 1 1/2 inch away.

     note this will be done while the two repelling magnets are
          a.  at some distance from one another (that distance is undetermined at this time)
          b.  with the force shielding magnet centered between the repelling magnets.
                     (an input)

2. measure the work done in sliding the force shielding magnet FROM a position of
in between the repelling magnets, (while the repelling magnets are about 1/32 inch from the
force shielding magnet,  each on their side)...... removing the force shielding magnet  TO
about 1 1/2 inch away (an input)

3. measure the work done to bring the repelling magnets to close (1/32 inch each) proximity to
the force shielding magnet (an input)

           note this will be done while one of the repelling magnets is already in a close (1/32 inch)
proximity to the force shielding magnet.  Only one of the repelling magnets will be moved during this
measurement set.

4. measure the work done to close the gap between the repelling magnets, once the
force shielding magnet has been removed to its most distant position (an output
measured in reverse).
     note  this closure is to a distance of the width of the shielding magnet plus 2/32 inch.
             
              the starting width for this closure measurement is undetermined at this time.

                 floor