Patent ID: 7208893
Filing Date: 2007-04-24
Classification: H02P

Abstract:
1. A motor driving control device comprising: a motor; a switch unit that controls on/off of an one-directional current flowing in a motor; a current detecting unit that is connected in series to the motor so as to detect the value of the current of the motor and to output a detection voltage; and a control unit that incorporates a signal generating unit for generating an on signal having a polarity change portion formed at an interval of predetermined time and a holding circuit for holding a circuit state, wherein, when the arrival of the polarity change portion of the on signal is detected, the holding circuit holds the circuit state such that the switch unit is turned on and the current is supplied to the motor, and when it is detected through the detection of the current detecting unit that the current of the motor is increased up to a target current value, the holding circuit releases the held circuit state such that the switch unit is turned off.