| 摘要 |
PURPOSE:To simplify constitution by selectively driving a stator coil in response to the polarity of a magnet for a rotor detected by a magnetic inductive element on starting and transferring operation to stationary revolution driving at a time when an output from the magnetic inductive element is inverted at polarity. CONSTITUTION:One Hall element HU is fitted to either one of a plurality of stator coils CU1, CU2, CV1, CV2, CW1, and CW2. An output from the Hall element HU and an output from a pattern 10 for a tachometer generator are each amplified by amplifiers 22, 23 and inputted to a muCPU 20. The muCPU 20 drives a motor through a driver 21. The stator coil is driven selectively so as to generate torque in the desired direction of rotation in response to the polarity of a rotor magnet detected by the Hall element HU on the starting of the motor, and operation is transferred to driving during stationary revolution at a point of time when the polarity of the output from the Hall element HU is inverted. |
