| 摘要 |
PROBLEM TO BE SOLVED: To make it inexpensively by lessening the number of switching transistors, and doing such like matters, and also, reduce the power consumption at drive, in a unidirectionally rotating step motor where a stator, a rotor, and a drive coil are arranged on a plane. SOLUTION: A stator, a rotor, and a drive coil are arranged on a plane. The drive coils are provided in a plurality. For example, they are provided two, and a switching transistor Tr5, to one drive coil 12a, and a switching transistor Tr6, to the other drive coil 12b, are connected, respectively. Then, a drive current 13 or a drive coil 14 is let flow one by one to either the drive coil 12a or the drive coil 12b by turning on the switching transistors Tr5 and Tr6 in order. |
