You will find an interesting document about the Johnson's motor at :
http://ourworld.compuserve.com/homepages/jlnaudin/html/johnmot.htm
In this document, I have tried to understand better the principle claimed in
this permanent magnetic motor. You will find a complete simulation with
QuickField about this motor.
All constructive comments are welcome.....
I hope that this will interest you,
Jean-Louis Naudin
03-04-98