| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a solenoid wherein a force attracting a movable core toward a fixed core is increased in the case of starting, and increase of heat generation after starting can be restrained. SOLUTION: A conventional coil is constituted of a main coil 5 and an auxiliary coil 6. A resistance value of the main coil 5 is made larger than that of the conventional coil, and a resistance value of the auxiliary coil 6 is made smaller than that of the conventional coil. A current is made to flow in the main coil 5 or the auxiliary coil 6 with an operating circuit of an operating circuit board 12 in which the main coil 5 and the auxiliary coil 6 are connected in parallel or in series. As a result, a current larger than that of the conventional coil is made to flow in the case of starting, and a current smaller than that of the conventional coil is made to flow after starting.</p> |
