| 摘要 |
An actuator includes an electromagnetic coil arrangement that is movable relative to a magnetic field generator between a first position and a second position of the actuator. The actuator is arranged such that when the actuator is in the first position, a pulse of current through the electromagnetic coil arrangement produces a region of magnetic field that repels the magnetic field generator from the first position and attracts the magnetic field generator towards the second position to move the actuator to the second position. |
