The electric motor is a very simple device. Assembling the device will take no more than ten minutes and will not require any expenses. But such work, especially if you study the structure and operation of an electric motor with children, is very interesting and informative.
Necessary
- - battery holder with contacts;
- - magnet;
- - rechargeable battery or AA size battery;
- - 1 meter of wire with enamel insulation, with a diameter of 0.8-1 mm;
- - 0.3 meters of bare wire, 0.8-1 mm in diameter.
Instructions
Step 1
Start building your electric motor by winding a coil. To do this, you need a wire that has enamel insulation. Wrap the wire in even turns. This is quite difficult to do, so use a base, such as a rechargeable battery. Leave 5cm of wire free at each end. Wind about 20 turns around the base you are using. The winding should not be very tight, but at the same time, winding too loosely will not work.
Step 2
Remove the resulting coil from the frame. Do this very carefully, taking care not to damage the winding. Twist the loose ends of the wire around the turns obtained when winding. This is necessary in order for the coil to retain its shape. Place the turns obtained during winding exactly opposite each other. Leave about 1cm of wire. These ends will place the coil on the holders. To improve the performance of the electric motor, strip the insulation at the ends of the wire from which the coil is made. There is a little trick here. Remove the insulation from only one side of each end. For example, only at the top half of the wire ends. The lower part must remain insulated. Most importantly, be careful to keep the insulated edges down at both ends of the coil.
Step 3
Make the holders on which the coil will be located from wire without insulation. Outwardly, they are a wire bent in half with a loop. The ends left when winding the bobbin will be inserted into this loop. Just fold a piece of wire 15 cm long in half, while wrapping it in the middle around the nail.
Step 4
Make the base of the electric motor from the holder for the storage battery. It has a certain weight and will keep your engine from vibrating while it is running.
Step 5
Now start assembling the engine. Attach the holders to the battery. Insert it into the battery holder. Place the spool on the holders. Place a magnet on the battery. Has the coil started to spin? It means that everything is done correctly.
Step 6
If you want to stop the operation of the electric motor, remove the coil from the holders. This will open the circuit and the engine will stop running.
