© Neil Cameron 2019
Neil CameronArduino Appliedhttps://doi.org/10.1007/978-1-4842-3960-5_23

23. DC Motors

Neil Cameron1 
Edinburgh, UK

../images/471900_1_En_23_Chapter/471900_1_En_23_Figa_HTML.jpgThe DC (direct current) motor has many applications in robotics, portable power tools, and electric vehicles. DC motors are driven by the force generated in a magnetic field. Passing a current through an electromagnet, which is a coil of wire wrapped around a metallic rod, generates a magnetic field and reversing the current changes the polarity of the electromagnet. Given that same-pole magnets repel and dissimilar-pole magnets attract, then mounting two electromagnets on a rotor enclosed within a permanent magnet ...

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