| 摘要 |
PURPOSE:To drive a motor by obtaining a suitable driving timing of the motor even in the case of a low speed range at the time of driving motor coils. CONSTITUTION:Counterelectromotive forces of motor coils 4a, 4b, 4c are respectively shaped by comparators 5a, 5b, 5c, and respectively supplied to data input terminals of D-flip-flops 6a, 6b, 6c. Delay clocks K are generated from the output signals of the comparators 5a, 5b, 5c, and supplied to clock input terminals of the D-flip-flops 6a, 6b, 6c. A motor is driven by using the clocks K. |
