| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power tool capable of appropriately controlling a soft start according to a magnitude of a load. <P>SOLUTION: A driver drill 1 includes: a motor 63; an inverter circuit 62 for applying a voltage to the motor 63; a trigger 52 for instructing the start of power supply from the inverter circuit 62 to the motor 63; a control circuit 51 for controlling the inverter circuit 62 so as to apply the voltage to the motor 63 at a predetermined increase rate according to an instruction from the trigger section 52 until electric power supplied to the motor 63 reaches a target value; and Hall ICs 63i to 63k each detecting the magnitude of a load applied to the motor 63 where the control circuit 51 changes the predetermined increase rate according to the magnitude of the load. <P>COPYRIGHT: (C)2012,JPO&INPIT |
