| 摘要 |
PROBLEM TO BE SOLVED: To be able to switch the rotational speed of a motor without breaking down the cell balance of a battery and to be able to reduce the power consumption of the battery by efficiency performing the switching in a fluid apparatus sucking or discharging gas by the rotation of the motor.SOLUTION: A control circuit 40 stops driving a motor 16 when a stop switch 12 is operated, and drives the motor 16 when a drive switch 11 is operated. Further, at the time of driving the motor 16, the control circuit 40 causes the motor 16 to perform high-speed rotation or low-speed rotation by switching a driving current passing through the motor 16 via an FET 32 in every time the drive switch 11 is operated. When the drive switch 11 is pressed for a long time for a time period longer than a set time, the control switch 40 places into a high-power mode only in the long press period, and maximizes the driving current passing through the motor 16 to cause the motor 16 to perform ultrahigh-speed rotation. |
