PSN-L Email List Message

Subject: Re: Pondering 2 stacked ring magnets = round coils
From: Brett Nordgren Brett3mr@.............
Date: Tue, 03 Jun 2008 22:35:24 -0400


I think you are almost certainly right, that opposing magnets wouldn't 
work, based on symmetry considerations.  Though I still would like to see a 
quick test to prove that it truly doesn't work the way I was thinking.


At 01:03 PM 6/3/2008 -0400, you wrote:
>In a message dated 2008/06/03, paleoartifact@......... writes:
>Hi Meredith,
>        Sorry, but I don't understand Brett's suggestion. You would get 
> the best results by adding end plates and a central core. One end would 
> be a flat plate with the circular central core mounted on it. The other 
> end would be an outer ring at the end of the magnets and a gap to the 
> central core. This would concentrate all the magnetic flux in the 
> circular gap between the central core and the end ring. The end ring 
> collects most of the flux and concentrates this over the ring gap. The 
> magnetic saturation of iron is about 1.6 x that which is produced by Neo 
> magnets.
>        Regards,
>        Chris


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