Very, very cute! Thanks, Harry! I'll definitely be passing this one along!
On 02/15/2010 11:45 PM, Harry Veeder wrote: > Naudin's Solid State Generator. > > http://www.youtube.com/watch?v=SjDbIrKIVXs > > How do you explain this? It's the same principle as the Steorn motor, which also depends on the ability of the core material to make the effects of the field of the toroidal coil "leak out". An air core toroidal coil has a B field contained entirely within the torus. Similarly, a toroidal coil with any ideal material (with fixed permeability) also has an entirely contained B field. However, the core material isn't linear. Its permeability is a decreasing function of the applied B field strength. When the coil is "off", the neo magnet induces a strong "secondary" field in the core. That field is, of course, quite visible outside the torus. When the coil is "on", the permeability of the core is reduced, and the "secondary" field induced by the neo magnet is reduced. That reduction in the induced field is, of course, also visible outside the torus. And that change in the induced field, which happens 200 times a second, is what is in turn inducing a current in the pickup coil. The thing which is most interesting here is figuring out the energy budget. I haven't attempted that (yet) but if we could get a handle on that, I think we'd also get a full understanding of the Steorn motor. Note that we can't possibly understand this one without accounting for all losses in the form of heat, both due to "Joule heating" and due to eddy currents.
