polyphase motor braking method and device of discount

摘要

power failure has occurred because of a brake disk, a circuit and method for power disturbance occurs, the disk drive motor is at the prescribed rotational speed have been slow to produce output uc2e0ud638(28) to the circuit (10) etc.. the circuit (10) of a motor driving circuit part or the elongated circuit (head retract circuit) and the integrated circuit on the way home. power failure has occurred, and the disk drive is the prescribed rotating speed has been slowed down when the read / write time, and a mechanism (17) is pulled. the output signal from the gate (18) at the prescribed rotating speed, the engine had been slowed down by the driver when the brake disk.the motor is at the prescribed rotational speed have been slow to produce the output signal to the motor in order to set the level and time of occurrence of the fall - - emf (back - emf: 14) by the drive.