the start u201c moment u201d t 4 by u201c just before the start moment u201d in this case is meant a time that ends when the start u201c moment u201d is beginning the time shall be at least so long that a considerable reduction of the holding current can be achieved the time shall however not be so long that the motion can start too early for example due to gravity or other forces in the system the variant gives in the start u201c moment u201d t 4 a reduction of the holding force that must be overcome in order that the motion shall be able to start the consequence will be that the motion will start earlier in fig2 this method of operation is shown for the return motion of the stopper element 13 this return motion is supposed to begin at a time t 4 from an earlier time t 3 onwards the holding current in the end position is reduced such that the holding current has a value of 0 at the time t 4 or slightly later this enables the stopper element 13 to start its motion exactly at t 4 at a later time t 5 the stopper element 13 has reached its original position again in yarn stopper magnets according to the state of the art there is usually a force close to the end position that is strong in many cases stronger than desirable this means that the requirements of the damping capability of the.