A drive circuit for an electric motor, has a driving source unit, configured to generate a driving source signal and a driving unit, connected to the motor and configured to drive the motor according to the driving source signal. A sensing unit senses the actual speed of the motor. A control unit stops operation of the motor when the actual speed of the motor falls below a predetermined level. A timing unit counts a predetermined time period from the time the motor stops operation. The motor resumes operation at the end of the predetermined time period.