How to make a DC Motor
 
Some background facts...
In 1820, the danish physicist Hans Christian Oersted discovered
the relationship between electricity and magnetism in an experiment.
He demonstrated that some current through a wire
could move the magnetized needle of a compass.
There might be an interaction between the electric and magnetic forces.
This was certainly revolutionary for its time.
The English physicist Michael Faraday became interested in electrical phenomena,
and he repeated Oersted's experiments in his laboratory.
He thought whether it would be possible to obtain electricity from magnetism.
Faraday built what has been called "Faraday's ring",
the working principle of our time's transformers.
While the current from the battery cell circulated through the primary coil,
it was not possible to detect any steady current through the secondary coil.
Nevertheless, the galvanometer showed a little jolt when the switch was turned on or off.
This study helped him arrive to the conclusion
that only the changes in the magnetic field induce an Electro-Motive Force (EMF)
Materials
Drill
Soldering Iron
Bolt, nuts and washers
A couple of magnets
Hole cutter bit
Standard carpentry wood
Enameled copper wire
Small copper plate
Soldering Tin
Drill Bit
Conmutator made with the copper plate
Tip. Tin the copper plates BEFORE starting with the windings!
Remove the enamel (with sand paper or with fire).
Solder the tip of the cable
200 turns for each core, clockwise (as viewed from the front) all the time.
Remove the enamel. It is not necessary to cut the wire. Solder it to the conmutator in the following copper piece.
Always check every connection with a multimeter.
Continue with the windings, always clockwise, another 200 turns.
Remove the enamel. Solder. Check. Repeat
For a total of 600 turns.
Connections in detail.
