| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a motor control circuit in which a wave signal for controlling the motor rotation speed is generated, the rotational speed of a motor is controlled and noise can be reduced, when the motor is rotating and when it is switched by a phase of coil assembly. <P>SOLUTION: The motor control circuit controls coil assembly of the motor and makes the motor rotates. The motor control circuit comprises a Hall element for generating a first phase wave signal, a division wave signal generating circuit for generating a division wave signal, a comparator which is electrically connected to the Hall element and the division wave signal generating circuit, compares the first phase wave signal with the division wave signal and generates a first control signal and a coil-switching circuit which is electrically connected to the comparator and the motor makes, after the first control signal has been received. <P>COPYRIGHT: (C)2006,JPO&NCIPI |
