| 摘要 |
PURPOSE:To simplify the driving circuit of a DC motor so as to realize size and cost reduction by forming the exciting coil of the DC motor by use of a pair of exciting coils which are connected in the opposite phase to each other. CONSTITUTION:An exciting coil is composed of a pair of exciting coils 10-1 and 10-2, which are connected reversely to each other. Transistors 11 and 12 are connected to these exciting coils 10-1 and 10-2. The output of a pulse generat ing circuit 13 is connected to the base terminal of a transistor 11 through an inversion circuit 15. Hereby an alternating field is produced in the exciting coils 10-1 and 10-2 of a motor 10 and the motor 10 rotates at the specified number of revolutions in the specified direction. |
