| 摘要 |
PROBLEM TO BE SOLVED: To provide a drive device for a DC motor and an electric apparatus therewith which can suppress generation of driving torque drop, vibration and noise, and can improve control stability. SOLUTION: This drive device includes a duty determining means 6 whose voltage is applied between the terminals of a DC motor 1 has rectangular pulses and which determines duty so that the output current supplied to the DC motor 1 may have dummy sinewaves, and a pulse width modulation means 7 which modulates pulse width according to the duty determined by the duty determining means 6. As a result, the motor current becomes a sinewave in dummy, and current is suppressed from lowering at the time of switching energization to a stator winding, thus it is possible to suppress driving torque from lowering for control of vibration and noise. |
