WHY WON'T IT WORK!

[petersone]

I have an idea,and I need to "reverse" a magnets pole,if a north pole approaches a piece of iron,the iron becomes a south pole,I think,if so,a shorted coil is induced by the south pole,it will produce a south pole,as long as it can't "see" the north pole it will help the north pole approach,so getting Mr Lenz to help and not hinder.
I would be happy for you experienced people to tell why it is not doable.
peter

[Michelinho]

Hi petersone,

If you drop a magnet in a copper tubing, the magnet slowly decends. If you drop a magnet in a tube made of copper mesh the magnet does not slow down. I tried placing copper mesh on each side of a coil on my alternator (axial air core model) and compared the results under a load on that coil and an unmasked coil, no difference. The copper mesh does not work.

Back to square one...

Take care,

Michel

[petersone]

Michel,thanks for your response,but I think you misunderstand my idea,or I misunderstand yours,or maybe both,I don't understand the copper,when I'm using iron.
When a n pole approaches a piece of iron,the iron becomes a s pole,if a shorted coil only "sees" the s pole it will produce an s pole,is that not correct?
peter

[Charlie_V]

Hi Peter,

I understand your idea.  The problem is that the piece of iron becomes both a north and a south pole.  I can't think of any way to make the iron produce a south pole that the coil would "reverse" lenz from, or atleast see only the south and not the north.


Charlie

[SomedayIsle]

You are not far off the unbeaten path, Peter.  Consider employing an amorphous core such as metglass:

http://cgi.ebay.com/Metglass-nanocrystalline-tape-for-MEG-generator-5kg_W0QQitemZ310127838496QQcmdZ

Or cannabalize a hard drive for some high permeability MuMetal.

http://cgi.ebay.com/MU-METAL-MAGNETIC-STATIC-GUITAR-MIC-PHONO-LP-MRI-SHIELD_W0QQitemZ400023896181QQcmdZ


Add 2 parts Wesley Gary, 2 parts Howard Johnson, 1 part Steve Kundel, and 3 parts Qin Gang.....


And you just might be off to the race(s)