Contact Alan Magnabend Homepage Alan's Homepage

MAGNABEND ELECTROMAGNET DESIGN TOOL

I am indebted to my colleague, Mr Tony Grainger, for the JavaScript program which performs the calculations for this page.

The program produces detailed

calculator goes here

cross section goes here

An electromagnet consists of 2 basic parts;

An electric current in the coil induces a magnetic current (flux) in the magnetic circuit (Magnetic potential = N x I ampere turns).

The program on this page brings together all the salient features of both these basic parts and makes detailed calculations to inform your electromagnet design.

You can type any numbers you like into the

At the same time both the geometry and the dimensions for electromagnet cross section drawing will be automatically updated

.

Additional Calculated Results can be displayed if desired by clicking on the "

To reset the program to the default numbers just refresh (or reload) this web page.

The calculations assume that the coil is made from

The relationship between the magnetisation in the steel and the field strength is non linear and cannot be represented by an equation. The curve is usually referred to as a

The calculations on this page use a table lookup for the B-H curve followed by an iterative method to obtain accurate results for the flux density pertaining to the particular magnet configuration.

See also the