Electric tool

The utility model provides an electric tool, which is characterized in that a detection module comprising a plurality of divider resistors is added on the basis of a conventional brushless motor control circuit, the plurality of divider resistors are connected in parallel at two ends of a power module, and the divider resistors are connected in parallel at two ends of the power module under the condition that a power switch tube is not turned on. The MCU detects the voltage of the divider resistor and confirms whether the power device is damaged or not before power-on, if it is recognized that the power switch tube is damaged before power-on, the tool is controlled not to be powered on, more serious faults generated during power-on are avoided, and the power-on safety of the tool is improved. 本实用新型提供了一种电动工具，在现有的无刷电机控制电路的基础上，增加了包括多个分压电阻的检测模块，多个分压电阻并联于功率模块两端，在不开启功率开关管的情况下，通过在功率模块两端并联分压电阻，MCU检测分压电阻的电压在上电前确认功率器件是否发生损坏，若在上电前识别到功率开关管已经发生损坏，则控制工具不上电，避免上电发生更严重的故障，提高工具上电的安全性。