Linear controllable electromagnetism screwdriver of magnetic force

The utility model discloses a linear controllable electromagnetism screwdriver of magnetic force, including screwdriver body, coil and control switch, the coil twines in the cutter arbor of screwdriver body, be equipped with the mounting groove that is used for installing the dry battery on the handle of screwdriver body, it is equipped with contact and spring to correspond the dry battery in the mounting groove, contact and spring are connected through the wire and are used for connecting into the return circuit with coil and dry battery in the coil, and control switch installs in the handle of screwdriver body and on connecting the wire between coil and contact or spring, control switch is resistive switching, the utility model discloses a linear controllable electromagnetism screwdriver of magnetic force through adopting the electromagnetic induction principle, adds excitation coil and DC power supply on the screwdriver to screwdriver metal blade pole forms a miniature electro -magnet as the iron core, car