Generator model

How to Make a Simple ElectricGeneratorBuilding a simple, low powered electric generator can be a fun science fairproject, or just a workshop experiment for a would-be engineer. The parts aresimple, inexpensive, and easy to find.Magnetic Generatorwww.alibaba.com/Magnetic-Generator

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1 Decide how large a project you are interested in bu ilding. There are design

and engineering considerations that could be taken up, but for simplicity's sake,

this article will give instructions for a simple, low output generator.

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Steps

How to Make a Simple Electric Generator: 15 Steps (with Pictures) http://www.wikihow.com/Make-a-Simple-Electric-Generator

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2 Acquire the materials you will need. The sizes and specifications can be

adjusted to raise the output capacity of your generator, but this is a basic overview

of the project.

22-28 ga. enameled copper wire. About 500 feet will produce a modest

electrical current. More "windings", coupled with a stronger magnet will increase

the power output.

3 or 4 inch bar magnet. (Should fit lengthwise in the cardboard tube, below, with

a little clearance)


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1/4 inch diameter steel or aluminum rod, 12 inches in length.

24 inches of 1X4 lumber.

1 - large paper or card board tube, 4-inch diameter.


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2 - 1/4 inch flat washers.

Build a "U" shaped frame to support your "rotor", i e, the permanent bar

magnet mounted on a steel shaft. by

Cut the 1X4 lumber into pieces, 2, at 6 inch lengths, one at 12 inches in length.


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Nail or screw the two 6 inch boards to the 12 inch board at a perpendicular

angle to the 12 inch board, which is the base for the rotor frame.

Drill two 1/4 inch holes in the two uprights of you r frame, aligning them so


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that the 1/4 inch rod, (the rotor shaft) will go th rough both without binding.

Drill a 1/4 inch hole through the center of your ba r magnet, on the flat, or

widest side. Be careful to measure the center both in length and width, and drill

perpendicularly, so that when the shaft goes through, the magnet will be "square" to the

shaft.

Slide the metal shaft through one side of the suppo rt frame, slide the magnet

onto the shaft.


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Cut a 4 inch section of the paper or cardboard tube . If you don't have a piece of

tubing available, you can make one by rolling a sheet of construction paper into a

cylinder and gluing or taping it to secure it in this shape. The ideal diameter of the tube

will be just large enough to allow the bar magnet to spin freely inside the tube, keeping

the magnetic field as near the copper windings as possible.

Wind the copper wire around the cardboard or paper tube, leaving about 16

to 18 inches of wire loose on each end to connect t o you power test device,

an electric light bulb, or other device you will su pply power to. The more "turns" or

winds around the tube you make, the more power your generator should produce.


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Slide the tube over the shaft and magnet, then slid e the shaft on through the

other support frame. You will want several inches of the shaft sticking through

each end of the frame.

Glue the magnet to the shaft at the center of the t wo supports, using a

high strength hotmelt glue or epoxy. You may choose to drill and tap threads

into the magnet for a "set screw" if you have the tools to do so, but the idea is for the

magnet to be stationary in relation to the shaft.


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Support the paper cylinder with the wire windings a t the center of the

shaft with the bar magnet centered on the wire wind ings. You may simply

cut cardboard legs that can be glued to the cylinder, or build a wire frame from a coat

hanger or similar stiff wire to accomplish this.

Turn the shaft with your fingers to see if the ends of the magnet hit the

inside of the tube. It must turn freely, but be as close as possible to the tube.

Again, having the magnet's ends as close the copper wire windings will increase the

"exciting" action of the magnetic fields the magnet produces.


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Glue a washer on each end of the shaft outside the wood supports.

Attach the two wires you have loose at the ends of the windings to a

flashlight bulb or other low voltage lamp, or conne ct the test leads from a

voltmeter or multimeter to them.


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15 Spin the shaft as fast as possible. You may want to wind a string around the

end of the shaft as you would a toy "top", then pull it sharply, or just spin it with

your fingers. You should get a small voltage, enough to light a 1.5 volt light bulb by

manually spinning the shaft.

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You may want to fashion a small pulley and attach an electric motor to

the shaft to produce enough RPMs to maintain an electric current.

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22-28 ga. insulated or enameled copper wire. About 25 feet willproduce a modest electrical current. More "windings", and larger wire,coupled with a stronger magnet will increase the power output.

3 or 4 inch bar magnet. (Should fit lengthwise in the cardboard tube,below, with a little clearance)

1/4 inch diameter steel or aluminum rod, 12 inches in length.

24 inches of 1X4 lumber.

4 inch paper or card board tube.

2 - 1/4 inch flat washers.

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Categories: Hardware

Recent edits by: Davjohn, kelleeperez, Flickety

In other languages:

Español: Cómo hacer un generador eléctrico simple, Italiano: Come Costruire un

Semplice Generatore Elettrico, Português: Como Construir um Gerador Elétrico

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Generator model