I have found that diameter of longer coils has little effect on gauss. Never the less this paradox would seemingly still hold as long as the coils were short, preferablr shorter than shown.
On 2/20/08, John Berry <[EMAIL PROTECTED]> wrote: > > I have designed a transformer which I have every reason to believe should > be very much overunity. (the primary should not 'see' the secondary) > > But this post isn't about that because from my previous experience on > vortex if I am not ignored outright I will get one of 2 answers, either 'It > won't work but I don't know why' or I'll get some equasion which I warned in > the first place I will think looks like some alien language and not > understand. > > No, this is about a brain twisting magnetic anomoly I came across while > pondering a possible version of the transformer. > > The basis of the problem is this. > Common sense and coil calculators (and even real world experiuments I did > looooong ago) all assure me that 2 identical hoop coils where the only > difference is the diameter should produce very different magnetic field > strengths (densities) when an identical current is passed. > > The tighter coil produces a higher gauss than the same number of Ampere > turns in a larger dia. coil. > > The next fact that can't be denied is that a coil wound on a highly > magnetically permeable toroid should have no significant readily measurible > magnetic flux outside the toroid provided the core has not been saturated. > (I am well aware that infact strong magnetic fields do exist outside the > toroid but due to superposition they are not readily detected by magnetic > means) > > These 2 facts collide in a seeming impossibility however, if you have (to > keep it easy) 2 square toroid forms (a normal E I bar transformer with the > middle of the E removed) and you wind a single layer coil of say 100 turns > on (the outside vertical leg of) each of these toroid forms and pass a > current through there should not be an observible external magnetic field > from either of these toroids. see fig 1. > > If we now place the 2 coils next to each other (as in fig 2) we should not > expect any drop in the gauss in either core since neither produced a net > external magnetic field. > > Now consider fig 3, we have a show down (largest gauss wins) between a > tight coil over one core or a larger looser coil (of the same number of > ampere turns) over 2 cores, the tighter coil should win, easy right? > > Now in fig 4 we have the same only we have another core we have placed > next to the tight coil, which one wins now? > Since we have alrewady established that the tight cores shouldn't > interfere with each other the 2 tight cores should win. > > But by now surely you can see the paradox, the only difference between the > 2 tight coils and the one loose one is the windings between the 2 tight > coiled cores, but these shouldn't create any net magnetic field, fig 5 helps > illistrate this issue. > > Anyone wanna take a crack at this, either explaining the paradox or at > least telling me in each case if you agree with the winner I've chosen. > > Or run it through a 3D magnetic simulation program? > > Or at least agree it's a head scratcher!?!? > > > > >
