Simple DC Motor


Introduction: Simple DC Motor

About: Electrical Engineer, control systems, automation, small electronics, home automation, microcontrollers etc.

This will show you how you can make a simple DC motor.  The motor isn't exactly useful but it's a great demonstration on how DC motors works and can be a cool desk-top decoration

You simply bend paperclips to form slots at the end and connect them to the ends of a battery.  Then wrap wire around a round object to form multiple loops.  Place the ends of whats coming off the loops into the paperclip slots, and place a magnet underneath.  The loops will begin to spin.

You will need to use magnetic wire for this.  I used some heavy copper wire to emphasize the construction, but the heavy wire doesn't spin.  Also be warned that the wire will begin to heat up.  

Simple enough.  Nice Demonstration of a DC motor.  Cool thing to have laying around.



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    7 Discussions

    I don't think this will work as described. You need to use magnet wire, which has a clear plastic coating. Then you need to sand the coating off one end of the wire. On the other end of the wire, sand the coating off only one side, so that as the loop turns the coating will alternately block the flow of electricity and allow the flow of electricity. In this way, the electromagnet created by the electricity passing through the loops will turn on and off. This will cause the magnetic field of the electromagnet to align with the magnet field of the permanent magnet, then turn off and continue spinning due to its momentum. When it spins far enough, it will turn on again and receive another "pull" from the permanent magnet. This will repeat over and over, allowing the loop to spin until corrosion builds up on the contact points at the paperclips (or the battery gets too weak).

    6 replies

    Yes, as i said you do need to use magnetic wire for this, i just used the copper wire to show the construction of it. I did forget the detail about only scratching one side of each end off. Thanks for that addition.

    There isnt much to it. I tried to emphasize the construction, but other than the images, all you need to know is to use magnetic wire instead of copper. I believe its fairly simple to set up.

    The heart of the motor is to have the ends of the magnetic wire scratched to copper at half of the contact surface with supports, and a magnet over the battery, near the coil.

    You did a "motor" that can not work.

    Yes, as I stated above, dudleyjohn has added that detail that I forgot. I used a heavy copper wire to show the loops better. I am working on creating a graphic to accurately demonstrate the magnetic wire that should and shouldnt be stripped.