| 摘要 |
PROBLEM TO BE SOLVED: To provide a motor controller realizing power saving operation, an oxygen rich device and a method for driving a motor. SOLUTION: The motor control circuit for an oxygen rich device comprises a power regulation circuit 12 for regulating AC power being fed to an induction motor 10, and a control circuit 13 for controlling the power regulation circuit such that the motor 10 is driven with maximum power for a predetermined time after start and then driven with predetermined low power or at a predetermined number of revolutions. According to the invention, a power saving operation can be realized through a simple arrangement. Furthermore, the vibration of the motor is reduced and a small cooling fan can be used. |
