Abstract: A rechargeable system includes: a charger (4); a battery pack (1); an adapter (3) configured to be electrically connected between the charger (4) and the battery pack (1), a cable (58) configured to be electrically connected between the battery pack (1) and the adapter. A battery-side microcomputer (526) controls the shutdown circuit (523) such that the shutdown circuit (523) disconnects the at least one of the positive terminal (5a) of the battery pack and the negative terminal (5b) of the battery pack (1) from the rechargeable battery (51) when detection of the battery-side microcomputer (526) indicates occurrence of at least one of two following events: one event is such that the rechargeable battery (51) is fully charged. Another event is such that the rechargeable battery (51) has some errors.

Abstract: A power tool includes: a secondary battery; a drive unit; a detecting unit; and a control unit. The secondary battery has positive and negative terminals across which a battery voltage is developed. The drive unit is connected to the secondary battery. The detecting unit is configured to detect a current value and a voltage value supplied from the secondary battery to the drive unit. The control unit is configured to control an effective voltage and an effective current applied to the drive unit depending on a load imposed thereon to fall within an allowable power dissipation value.

Abstract: An inverter device includes: an inverter circuit configured to perform ON/OFF operations with a preset duty cycle to convert a DC power into an AC power and output the AC power to an AC motor; and a controller configured to change a duty cycle of the ON/OFF operations.

Abstract: An electric working machine including: a motor; a driving unit configured to be driven by the motor; a trigger switch configured to allow rotation of the motor; a power supply unit configured to supply electric power to the motor; and a control unit configured to control rotation of the motor, characterized in that: the electric working machine further comprises a switching element configured to perform short-circuiting between terminals of the motor to apply electronic braking, wherein the control unit is configured to perform adjustment of the braking by controlling the switching element when stopping the motor.

Abstract: [Problems] To provide a disposable absorbent article that can generate a large temperature change on a surface thereof. [Means for Solving Problems] A disposable absorbent article comprising, at an area including a crotch portion, an absorbent portion which has a liquid pervious face sheet (30), a liquid impervious sheet (11) and an absorbent structure (50) that is interposed therebetween is configured that on a surface of an absorbent body (56) having a high absorbent polymer at least in a face side layer thereof, a temperature changing substance (40) for cooling or heating urine by contact with the urine is sprinkled and that the urine, which has been cooled or heated by the temperature changing substance (40), can be absorbed and retained in the face side layer of the absorbent body (56).

Abstract: An inverter device includes: an inverter circuit configured to perform ON/OFF operations with a preset duty cycle to convert a DC power into an AC power and output the AC power to an AC motor; and a controller configured to change a duty cycle of the ON/OFF operations.

Abstract: A power tool system includes: a power tool including an AC motor; a portable battery pack; and a power supply device that converts a DC power supplied from the portable battery pack into an AC power to supply the AC power to the AC motor.

Abstract: A power tool includes a small-size lithium ion secondary battery used as its driving source, and at least one lithium ion secondary battery having a diameter of 14 mm is disposed inside a grip portion of a main body of the power tool. The lithium ion secondary battery has a sufficient output characteristic required for driving the power tool. When a switch installed in the main body of the power tool is operated by a user, electric power is supplied to a driving unit including a motor so that the power tool is activated. The lithium ion secondary battery is of a pack type, or is directly housed inside the grip portion, and the grip portion, which houses three of the lithium ion secondary batteries, is designed to have a diameter of 51.8 mm or less.

Abstract: In a power tool including: a housing having a body portion which houses a motor and a handle portion extending downward from the body portion; an output portion driven at the front of the motor; and a trigger switch which controls power supply from a battery to the motor, the motor, the battery, and the trigger switch are arranged so as to overlap each other in an intersecting direction with respect to a front-and-rear direction.

Abstract: [Problems] To provide a disposable absorbent article that can generate a large temperature change on a surface thereof. [Means for Solving Problems] A disposable absorbent article comprising, at an area including a crotch portion, an absorbent portion which has a liquid pervious face sheet (30), a liquid impervious sheet (11) and an absorbent structure (50) that is interposed therebetween is configured that on a surface of an absorbent body (56) having a high absorbent polymer at least in a face side layer thereof, a temperature changing substance (40) for cooling or heating urine by contact with the urine is sprinkled and that the urine, which has been cooled or heated by the temperature changing substance (40), can be absorbed and retained in the face side layer of the absorbent body (56).