Re: [femm] Electro magnet

for an optimization process including discrete parameters, like wire-thickness, see

http://www.mathworks.com/matlabcentral/fileexchange/loadCategory.do?objectType=category&objectId=5

using MATLAB as base software:

	Download Now:

	File Name:	bnb.zip
	Author:	E.C. Kuipers
	Summary:	BNB18 solves mixed integer nonlinear optimization problems
	Submitted:	2000-02-14
	Downloads:	2706

	Description:	BNB18 solves mixed integer nonlinear optimization problems. It is a branch-and-bound type algorithm.

File Details


File Id:	95	Average review:	4.5
MATLAB Release:	R11	# of reviews:	2
Size:	93KB	Subscribers:	12
Keywords:	mixed,nonlinear,branch-and-bound,optimization
Required Products:	Optimization

Best regards

Hendrik Hasper

----- Original Message -----

From: Eric Vogels

To: femm@xxxxxxxxxxxxxxx

Sent: Monday, June 30, 2003 9:53 PM

Subject: [femm] Electro magnet

Dear all.

I'm not sure my question fits in this forum. If not, the moderator may remove it. My question is:

I have no knowledge about electro magnets but I want to design an electro magnet that operates without an iron (or any magnetic material) core. I hope that is possible. As power I have 3 Volt, 3.6 Watt (from a bicycle dynamo). How do I calculate the strongest electro magnet (wire thickness, coil diameter, coil size, number of turns).

Thanks in advance.

Eric Vogels.

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