One Mr. WholeHam writes: >Hans Coler allegedly made a FE generator which self-synchronized these >random domain shifts in ferromagnetism.
It is true that the actual barkhausen jumps are only random in some cases. In others they are quite regular and reproduce from cycle to cycle. This is not at all odd when one considers the source of the jumps, pinning sites are physical dislocations and inclusions in the crystal lattice of the ferromagnet and don't move around. So domain walls tend to get stuck at the same places each cycle. One can "synchronize" the jumps by playing games with the underlying material, check out wiegand wires for more information about one such implementation. I wouldn't be expecting to power my house with this just yet though...(grin) K.
