self-powering electric generator... is it possoble....

If you go by the Law of Conservation of Energy it looks like possible. But if you had read about Energy Conversion techniques there is [B]not one{/B] that does not use up a part of the Energy put in to set up the conditions required for further conversion. This in short is stated as the efficiency of any engine is always less than one. IOW you can never take out more than what you put in. Like, if Steam(PE) is the source of your input energy and Electrical the output, then some energy from Heat Supplied is lost in raising steam, from steam to KE is lost in overcoming the ubiquitous friction, to quote just two sources of lost energy. The same will be true of your example. The DC Motor's bearing friction, the coil heating, the magnetic field leakages - all of these, will use up some energy and the rest alone can be converted to work! In your example Work happens to be again generation of new (electrical) energy. The composite machine if you build one will stop at the point where all of these energies: generated, lost and found balance out. In short, if there could be perpetual motion then there could be energy generation w/o input!Perpetual Motion is impossile. See [B]Ya. Perelman's Physics for Entertainment[/B] on intersesting discussions on Perpetual Motion.

I think you have a great idea. But of course it would cost you much money if you want to make the generator from part by part. The problem is you really need to have technical knowledge before you make it because it's risky if you don't have electrical and mechanical knowledge. You need to controlling the power in the battery and using inverter to make it can be use for home peripherals. You can save much money if you really can make it. Some people sharing their success story on such thing on the internet and you can try to find it. Have a nice day and happy mylotting.

I'm sorry to burst your bubble. 1) No machine can put out more energy than is put into it 2) Every motor wastes some power in friction and heat; electrical systems have resistance and impedance which also consumes power. Therefore a perpetual motion machine is impossible and an electric generator that produces enough power to keep itself going AND to power something else is doubly impossible.

I think the person above me is right. That is quite an impossible to generate more than what it receives.

The great thing about the "laws" we place on energy is that energy doesn't have the slightest clue we've put them in place. Everything's impossible until it isnt. Good luck.

Would not this overload at some point? You may have to find some way to have the motor attached to the magnet only go so fast. But then it will only produce so much power. It is a great idea though. I always kind of wanted to hook a giant fan up to a windmill, then point the fan at the windmill...