| 摘要 |
PROBLEM TO BE SOLVED: To provide a moving core capable of reducing heat generation and power loss furthermore, and a solenoid device including the moving core.SOLUTION: A moving core of the present invention is a movable core of a solenoid device that utilizes an electromagnetic force generated by the excitation of a coil. The moving coil is made of a magnetic material that has an electrical resistivity of 11.5 [μΩ cm] or less and a differential relative permeability of 80 or less, at a magnetic field of 1,000 [A/m]. The moving coil has a shape satisfying a relationship of R≥250/((logf)) where f [Hz] represents a frequency of a current supplied to the coil, and R [mm] represents a radius of the moving core.SELECTED DRAWING: Figure 10 |
