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Overunity Machines Forum



Tesla's "notes" on unipolar dynamo's.

Started by CrazyEwok, November 16, 2008, 09:12:08 PM

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CrazyEwok

Don't get me wrong i know that his dream was of a global energy network with Wardenclyffe as the starting point, but you look through his list of patents. there is a overload of many different ways of doing prettymuch the same thing. and a lot of it is "cost reduction and ease of creation" or "more efficient means of"
and over coming or even utilizing this magnetic field that is produced is half the fun!!! I am not intending on using the resulting magnetic field as a propulsion method but maybe harnessing it and using it to reduce the power required to produce a current at that level...

I'm sure that if you add an increasing magnetic field at the right angle/vector to the original fields you should be able to use it... But if not i will have myself an experiment that i can document what changes i have made and what result perhaps saving some one some effort or supplying them with the information they want.

Shanti

QuoteI am not intending on using the resulting magnetic field as a propulsion method but maybe harnessing it and using it to reduce the power required to produce a current at that level...

As I said before, the power required to get a certain power out of it has nothing to do with the strength of the magnetic field. The principle is simple: The stronger the magnetic field, the more torque you need to turn the motor, but also the more current you get.
This means, if you just have a very slight magnetic field, then you need only a small torque, but you also only get  a small amount of generated energy. So you have to turn the generator quite fast to catch this up.
This means: for the same amount of power out, you can either take a small magnetic field and turn the generator really fast, or take a strong field and turn it slower. As for the power needed it's absolutely the same, the torque and the rotation velocity decide the power needed. There's no magic to it. All conventional electric laws.
Sure, the extreme case, when there's no magnetic field, the homopolar generator doesn't work anymore, as the rotation speed would have to been infinite according to the equations...
And in practice surely quite some power will also be lost in the bearings, therefore practically a strong magnetic field is preferred, as the rotation velocity (and with that the bearing loss) can be kept small.

QuoteI'm sure that if you add an increasing magnetic field at the right angle/vector to the original fields you should be able to use it..

Use it for what?
As I said before, the strength of the magnetic field has principally nothing to do with the power-conversion-ratio.
All additional magnetic fields vectors which are parallel to the rotating axe either add to the exciting magnetic field or substract.

BTW: Homopolar generators are still used today. E.g. in some High Energy labs or for military purposes, as they are a very simple methode to generate extremely high currents.
E.g. by setting the disk in rotation you accumulate energy (rotation energy). Then by closing the circuit, the disk becomes a homopolar generator and the Rotation Energy becomes electric energy with an extremely high current.
E.g. in military applications this is used to power a railgun.

CrazyEwok

Wow Shanti, You sound like your really knowledgable on the ins ands outs of Dynamo's. Say can you point me in the direction of some material that tells me what a magnetic field is? or even how it effects electricity and why?!?  :P
Also just to pick your brain a little bit more can you refer me to some texts (electronic or print) that can show me atleast some of the experiments i am proposing and their out comes? this really interests me and i would like to know the results of the experiments to save myself some time?

Any information on different configurations and styles that were proposed and the results of the tests would be great!!!

Thaelin

   This brings to mind a question I have had for a long time. In patent number
381968, I see everything except a place to hook the power to. It has a 3 phase
generator hooked to a motor and commutators to deliver the output to the input.

   Am I just missing something here? 

thaelin

FastRuner

Hello.

Interesting information on this page about unipolar gen:
http://www.matri-x.ru/energy/unipolar.shtml

Best regards, FastRuner.