How to make a Generator at Home ???

Lesson to put electricity to work. Just a simple wind powered generator you can make with spare wire from an electric motor. This is  intended this to be just a prototype for a much larger unit you would like to build. The magnet rotor is separate for the coils to make repairs or upgrades easier. This unit is not intended for high speed winds. When you pass a magnet by a wire it should generate electricity. That is what we are going to try to prove here. Furthermore we can use wind energy to do all the work.

You Will Need :

• 12 small round magnets
• 6 beefy diodes
• 1/2 inch pvc pipe
• Lots of magnet or motor wire
• Poster board
• Glue
• Tape
• Jig to wrap coils

Tools:

• Cheap Dollar store magnetic compass.
• Voltmeter
• A diagram of the generator to be made.
• Drawing Compass
• Plastic knife
• 12 inch ruler

Process :

Each student is to take the materials and then put together a wind generator. They will need to use a bit of geometry to make the plates. By testing the coils with a compass they can see how magnetism works.  They will also see the force of wind can be put to work. They will get some experience at putting a project together as an engineer might do with a prototype. Lastly see the unit they have built create electricity. For younger students the soil and magnet platform could be pre-made.

Each coil is about 1 1/2 inches, so I need a circle at least 12 *1 1/2 round or 18 inches.
You can not easily draw a circle of 18 inches.
Circumference is 2 Pi r or the radius is 18 / ( 2 * 3.14) or about 3 inches.
You can draw a circle with a compass set at 3 inches.
Now to place the magnets and coils we need to know where to place them.
A circle = 360 degrees. 360 degrees / 12 magnets = 30 degrees per magnet.
You will need to draw 6 diameters to get the points where to place them.

Now make a second board the same way.

I recommend only doing one or two at a time or you will never get the magnets to set. Drop a little glue on a couple of points on the board. Add a magnet so that the center of the magnet is on the circle or half way in or out of the circle so to speak (n-s n-s n-s etc order). Once you have those magnets glued down and dried, add the rest of the magnets a couple at a time till you get them all done.

Cut a half inch or so of 1/2 inch pvc pipe. insert that into the wiring jig, bend the end of the wire that you will hold on to till the wire is wrapped. Caution: you must wrap all the coils in the same direction or your generator either will not work or perform not at it's best.  Place the coils with the wire all going in the same direction around the circle like you did the magnets.
Note: you can add a battery to the coll and see how the compass reacts to the coil make sure all the coils are in the same direction.  You may have to scrape off of the enameled ends to get a good contact with the battery.
Secure the coils to the base.

We will have 3 sets of wire for 3 phase or three outputs from 4 coils each. by doing this the power pulses will be segregated and the power output will be more even. Three of the lines will be tied (soldered) together and the opposite lines will go into the diode

Though the signal should all be dc, you could add a bridge to make sure. You also need to regulate the voltage, especially if you are recharging a battery. .

coils > diodes > voltage regulator > fuse and switch > item to be powered

We sill use 4 cups made of Styrofoam to keep the weight down.  You will want to cut a window on one side of the cup. Do not cut all the way to the bottom or all the way to the top. That way they will be easier to attach and have a totally stronger frame.

Note You could add a second level with 4 more cups at a 45 degree angle from the lower level cups.

Glue the two cup levels together making sure the long bolt will fit thought them easily.First level and second level should be if forty-five degree off so the wind will catch all the cups at different times.  Let dry.
Put the long bolt through the unit and attach to the frame.