Electric generators are devices that use alternating magnetic fields ought create a modern across a thread circuit. cottage complete scale models can be sophisticated and dear ought build, you can create a stupid electric generator easily. complete you absence ought perform is create a stupid frame ought include the thread and magnet, wind the wire, unite it ought an electric device, and stick the magnet onto a spinning shaft. This level mill healthful ought teach electromagnetic properties, or definition though a science project.
1. habitation the Frame
1) chop the cardboard. Cardboard will serve though the frame and aid though your stupid generator. use a ruler ought measure a cardboard strip that is 8 centimetres (3.1Â in) by 30.4 centimetres (12.0Â in). chop this strip out with scissors or a utility knife. This sole part will be folded ought figure the frame.
2) token the cardboard.
use a ruler ought measure across the length of the cardboard. figure your first token at 8 centimetres (3.1Â in). Your second token ought be at 11.5 centimetres (4.5Â in), and your third token ought be at 19.5 centimetres (7.7Â in). The final token will be at 22.7 centimetres (8.9Â in).
- This creates segments of 8 centimetres (3.1Â in), 3.5 centimetres (1.4Â in), 8 centimetres (3.1Â in), 3.2 centimetres (1.3Â in), and 7.7 centimetres (3.0Â in). perform no chop these segments.
3) fold the cardboard. fold the cardboard across each mark. This will figure your level part of cardboard into a rectangular frame. This frame will habitation the components of your electric motor.
4) glide the metal shaft across the aid frame.
promote a nail across the core of the cardboard frame. figure definite you further across complete three pieces of cardboard that are folded into the center. This will create the cave though your shaft. You can now insert a metal shaft, or use the nail though your shaft.
- The metal shaft does no devour ought be anything at particular. Any part of metal that will accommodate across the cave and change complete the pavement out the other phase of the frame is acceptable. The nail you use ought figure the cave will profession perfectly.
2. Creating the Circuit
1) wind the copper wire.
figure little turns almost the cardboard box with enamel coated copper wire
(#30 magnet wire). wind 200 feet (61Â m) of thread though tight though you can. forsake almost 16 ought 18 inches (40.6 ought 45.7Â cm) of thread loose above each purpose ought unite ought your meter, blaze bulb, or other electric device. The more "turns" or winds you figure almost the cardboard frame, the more might your generator ought produce.
2) Strip the ends of the wire. use a knife or a thread stripper ought touch the insulation from each purpose of the wire. touch almost 2.54 centimetres (1.00Â in) of insulation from each side. This will rent you ought unite the thread ought an electric device.
3) unite the wires ought an electric device. unite the two wires you devour loose at the ends of the windings ought a red LED, #49 tiny bulb, or a 1.5V grain-of-wheat lamp. Or, unite the examination leads from an AC voltmeter or multimeter ought them. own at brood that you are producing a same signify voltage, and larger devices (e.g. a normal blaze bulb) will no be powered by this generator.
3. site the Magnets
1) stick the magnets ought the shaft.
use a high might hot melt stick or epoxy ought stick four ceramic magnets ought the shaft. You expect the magnet ought be stationary with honour ought the shaft. The magnets ought be glued onto the shaft after the shaft has been inserted into the frame. rent the stick ought dry though little minutes (the instructions above the container can say you accurate drying age though your type of glue).
- For best results, use 1x2x5 cm ceramic magnets (these can be construct online though a rational price). stick them hence that two magnets are facing the coil with their north side, and two are facing the coil with their south side.
2) carry the shaft with your fingers. This allows you ought watch if the ends of the magnets defeat the inner of the frame. The magnets get ought carry freely, besides though shut though feasible ought the walls of the frame. Again, having the magnet's ends though shut the copper wire windings though feasible will expand the "exciting" operation of the magnetic fields the magnet produces.
3) rotate the shaft though rapid though possible.
You can expect ought wind a thread almost the purpose of the shaft, then drag it sharply ought carry the magnets. You could level just rotate it with your fingers. though the shaft turns, you ought change a tiny voltage (enough ought blaze a 1.5 volt blaze bulb).
- You could better the might output by putting a pinwheel above the purpose of the shaft and connecting it ought an electric fan ought carry the wheel. own at brood that this is sole good ought show the deed of the generator though you use more electricity turning it than you create.