田螺丝刀作为一种工具,被广泛使用。但,你是否有这样的经历:当你拧螺丝时,螺丝一不小心掉进了电路板的夹缝中,怎么弄也弄不出来……现在,虽有很多螺丝刀在刀柄内加了块永磁体,使掉进夹缝中的螺丝很容易被吸上来,但要再用手去将其取下,比较麻烦。所以,我便结合学过的电磁铁知识, Tian screwdriver is widely used as a tool. However, do you have such experience: When you screw the screw, the screw accidentally fell into the gap between the circuit board, how can not get it out ... Now, although many screwdrivers add a block in the handle The magnets make it easy to get the screws that fall into the gaps, but it is more troublesome to remove them by hand. So, I combined my knowledge of electromagnets