схема. Электродвигатель постоянного тока.
<a href="https://en.wikipedia.org/wiki/User:Wapcaplet" class="extiw" title="en:User:Wapcaplet">Wapcaplet</a>
CC BY-SA 3.0
<p>Created by Wapcaplet in Blender.
</p>
<a class="external free" href="https://en.wikipedia.org/wiki/Image:Electric_motor_cycle_1.png">http://en.wikipedia.org/wiki/Image:Electric_motor_cycle_1.png</a>