Clip-on ammeter

The invention discloses a clip-on ammeter. The clip-on ammeter includes a clip-on multimeter. A fixed pipe is installed on one side of the clip-on multimeter. The fixed pipe is a pipe-shaped structure. One end of the fixed pipe is connected to a cloth bag. The cloth bag is a shell structure that has an opening at one end and made of filter cloth. An opening of the cloth bag is abutted with the opening at one end of the fixed pipe. By combining a transmission, a blade and a brush, the motor can drive the blade to rotate to suck dust into the fixed pipe and the cloth bag. In the meanwhile, the motor can drive an input shaft of the transmission to rotate, and after the transmission decelerates, the brush is driven to rotate at a relatively low speed, thus a user can brush the dust off by using the brush conveniently, and the blade can suck the dust. 钳形电流表，包括钳形万用表，钳形万用表的一侧安装固定管，固定管为管状结构，固定管的一端连接布袋，布袋为一端开口的过滤布制成的壳体结构，布袋的开口与固定管的一端开口对接，本发明利用变速箱、扇叶、电机和毛刷相结合，电机能够带动扇叶旋转将灰尘吸入固定管和布袋内部，同时，电机能够带动变速箱的输入轴转动，变速箱减速后，带动毛刷以较慢的速度