School Project <br /><br />Here we have an open DC motor with permanent magnet for the field.<br />An old armature from a faulty hedge trimmer was used<br />As it was for a school project The following topics had to be covered.<br /><br />Chemical energy -- We used a lead acid battery<br />Kinetic energie -- We got the armature rotating<br />Noise -- We got audio from the speaker<br />Heating -- We got some heating in the armature, and commutator bars<br />Light -- We made a special LED driven via coil<br />Magnetic -- We established that the armature won't rotate without the magnet underneath.<br /><br />Note ! We put a 56 ohm resistor in series with the speaker to protect the speaker from a 12 Volts burn out.<br /><br />I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
