Electric tools come in various shapes, including tree wall trimmers, leaf blowers, chainsaws, and angle grinders, which are either powered by AC power or by batteries in wireless devices. Electric tools can use brushed DC, three-phase brushless DC, or induction motors, depending on whether they are intended for DIY enthusiasts or professionals who frequently use them, as well as the type of equipment and required performance. The electronic components inside these tools need to provide high efficiency (especially in wireless design) and long service life to enhance the usability of the tools.