Transformer design help needed

[jim.bloor@xxxxxxxxxxxxxxxxxxxx]

Hi

The notes on 'Calculating Transformer Inductances with Femm' kindly 
supplied by Cornelius Paul as a result of my last request have been 
very useful. I now want to look at designs with loosely coupled 
transformers, the couplng being variable thus providing an output 
dependent on the transformer core position. To do this I need to 
determine the ratio of input to output for various arrangements of 
coils and cores. Can anyone please explain how to obtain the 
necessary results from my models ideally in the form Vin and Vout.

Many thanks 

Jim Bloor