i wan to build an eletric dynamo,can any body pleas give me any valuble information.?
154156
You could look for this book from Lindsay Publications:\nhttp://www.lindsaybks.com/bks5/dynamo/index.html
438682
sure. go to a science store or look up schematics on the web.
1155724
there are 3 ways to do this. \n1) electronic method (digital method). it wont be possible for me to show you the circuit diagram here. however its efficiency is very high!\n2) transformer - you can make a transformer in which the primary coil should be of less number of turns and secondary coil should be bo many times higher in number. i calculated it and it came to the value of 20,000 turns in secondary coil. it wont be possible for you to make such a big transformer?? even if u make one, where will you keep it? and also it consumes a lot of electricity to give a low out put. that means that its efficiency is low.\n3) motorized convertor - you need two motors. one that runs on 12V dc and the other that runs on 220Vac. dc motor should be powerful enough to rotate the ac motor. so, you can use the motor of the car ventilation system. its very-very powerful!!! it seems that you are from india. so, you can go for the motor of maruti car. now all you need to do is to connect the shaft of both motors and run dc motor. along with it, ac motor will also rotate and it will act as a dynamo and produce current. though the current produced will not be sufficient to run any heavy electrical appliance. however you can surely light a bulb.\nhope that i have answered your question. for further enquiry you can mail me at\nmangeshome1982@yahoo.co.in\n\nall the best!!
721433
Edit: Perhaps I should revamp my answer to provide a clearer (actual) answer, that explains exactly what plays a role and, in effect, why I am right. I also added a couple sources you should read (in case you don't believe me ;-).\n\nAs asked at the first source (which has very good information about electric motors), "How can I make the motor spin faster or slower?". The answer is that it has to do with the power of the magnetic field. Because electicity is magnetic, you can either effect the speed by using a more powerful magnet or a more powerfully magnetic electrical current.\n\nTo quote Wikipedia about what a volt is, "The volt is the SI derived unit of electric potential difference". To truly understand what the "electric potential difference" means, you must first better understand the volt. The volt is a measurement of electromotive force (emf) and is just defined in terms of amperes and watts.\n\nAn amp is the constant current which produces a force equal to 2x10^-7N per meter, when travelling across two parellel wires one meter apart. It is one coulomb of charge per second (Q/t). It is a base unit upon which other units of electicity are defined (such as the volt).\nA watt is the unit of power equal to one joule of energy per second (P=W/t).\n\nHmm. Power? Power of a magnetic field? So how can you get more power in your circuit? If your power source is not rated by power output, then you can figure out the power using convertion:\nA=W/V=C/s\n\nIf you want a higher wattage, you can increase the voltage (electrical potential) or the ampage (current) or both. Or you can increase the charge - the amount of electricity (coulombs).\n\nSo the fact remains that voltage is *not* directly related to the speed of a motor. It can be directly converted in a way that makes it useful for that purpose, but any number of other things can be done to increase the power - the real goal you are looking for.\n\nThe answer is a definite "No." and a half-assed "Yes.".\n\n\n---Original Answer---\nNo. You might want to read more about the electric motor ( http://en.wikipedia.org/wiki/Electric_motor ) and magnetic properties of electricity ( http://en.wikipedia.org/wiki/Electromagnetism ). Also see the definitions of volt ( http://en.wikipedia.org/wiki/Volt ), watt ( http://en.wikipedia.org/wiki/Watt ), and amp ( http://en.wikipedia.org/wiki/Ampere ).
146543
http://www.motherearthnews.com/library/1986_July_August/The_Basement_Built_Wind_Generator\n\nthis might help
856860
You would need to have the magnet moving, and the power it would take to make it move would be more than any advantage you get out of it. Laws of Thermodynamics.
225971
Actually what you want to build is an electric *motor*, not an electric *engine*.  By definition, an engine has a number of working parts that move sychronously, whereas a motor is a simple moving machine (my English teacher nailed me on this back in the 12th grade and I've never forgotten it).\n\nBut nevermind all that semantics stuff.  See the link below for some excellent how-to examples, depending on how powerful a motor you want to make.\n\nHave fun!
11475
Well it is pretty easy to build a simple motor. There are instructions at this website.
1110951
hi dear friend\n         Absolutely the earth has magnetic energy naturally.because for example if we take an hydroelectric power plants the electricity is produced from the up to down fall of water on the turbines it is due to the magnetic property of the earth.Imagine if this hydro-electric power plant is built on the moon then how the water can flow think about it  there is no gravitational feild on moon.then water drops fall is very slow imagine how u can generate large amount of power.\n                                why iam saying this is upto my knowledge there is no other instruments to derive the large amount of free magnetic enery from the earth.if we want to find such kind of instruments we have to send lot of moneys.The only thing is by using friction due to magnetic propery of earth we can able to generate small amount of electrical energy\nfor example:\n             If u see in cycle dynamo it is kept in touch with the cycle tiers.Due to friction the cycle tiers is running and there will be little amount of current will be generated for lighting purpose.
209289
start here:\nhttp://en.wikipedia.org/wiki/Magnet
216197
Electromagnetic induction is basically the generation of an electric current in a wire due to passing through lines of magnetic flux, or changing flux.  This is the underlying principle in virtually all electromechanical generators in use today.\n\nProbably the easiest way to store the electrical energy would be in chemical form, such as a battery.  You could also store smaller amounts of energy in capacitors as well.\n\nWiring is simple, take a coil of wire and move it through a magnetic field.  The field can be from a permanent magnet, or from another coil of wire that has an electric current passing through it, creating a magnetic field.
88803
Go to this website and it will give you the info you need!\n\nhttp://www.sciencebuddies.org/mentoring/project_ideas/Phys_p009.shtml?from=Home
629702
A steam engine.  Please, the  1800s are over.  Have you heard of solar power and/or wind power?
719437
I don't know what your interests are, but one experiment that I have done in the past is building an electric motor.  It's easy and does not require a lot of equipment.  I'll include the equipment list below.  If you are interested, send me an email and I will send you a picture of the setup.  That would be easier than explaining it here.\nEquipment required:\n1)Small stable platform, like a wooden board (maybe like 6 inches long and 4 inches wide, and perhaps like 1/2 inch thick).  Maybe a piece of cardboard would work as well.\n2)Magnet (something like 1 inch by 1 inch and 1/2 inch thick)\n3)Copper wire with a small diameter (something you would be able to wrap around your fingers)\n4)6-Volt battery (might be called a lantern battery). The shape of the battery is rectangular and the battery terminals look like little springs at the top of the battery.\n5)Two paper clips\n6)Two thumb tacks
734023
It sounds like you need a multi-meter which is handy for all your electric household needs. You can measure current with most of these and they can be found in hardware stores like Ace in most cases and possible even at places like Wal-Mart. They are not uncommon items. If you want you might be able to go online and search for a amp meter most likely from a physics teacher website. I'm sure your nearest hardware store will carry coil but if not, Radioshack is an option. Problem with Radioshack that I have had is too much money for too little quantity (this is in general and not specific to the coils) if you have time, you can browse the internet for teacher selling sites but you may have to pay for shipping which might also run up the cost. The magnets really depend on what scale you are talking about. Hobby Stores will definitely carry small craft magnets but if you need really strong magnets your best bet is once again a teacher website. I hope that I have been at least some use to you, and best of luck on your experiment/project.
117346
Well i remember I did a research on hidroelectric plants. And the good thing is you can make aworking model using some water and a bicycle generator hooked to a small light bulb (holiday decoration ones or others like that) also any kind of research that involves things the evaluator can actually see working and moving is always a plus. Just stay away from volcanoes, while they ARE very interesting, its been done quite a few times. Hot air ballons are cool, some china paper glued to make the ballon and a aluminum plate with a candle to keep the air warm (you inflate it with a hair dryer) and you have yourself a working model, plus you have all the data refering how hot air is less dense than cold air etc...there are a lot of cool things you can do out ther and believe me Internet IS going to be VERY useful
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http://www.howstuffworks.com\nThey may have a link.\nThey did for building a wind powered generator.