POWER TOOL AND BATTERY PACK FOR USE THEREIN

摘要

A power tool includes a battery pack, a motor, a switching element, a detecting circuit, and a protecting circuit. The battery pack includes a battery. The motor is driven with an electrical power supplied from the battery pack. The switching element is provided between the battery pack and the motor to selectively allow the electrical power to be supplied to the motor when the switching element is turned on and prevent the electrical power from being supplied to the motor when the switching element is turned off. The detecting circuit detects an operating voltage of the switching element. The protecting circuit turns off the switching element when the operating voltage detected by the detecting circuit drops below a first voltage.