Input frequency : 25 KHz (DTC=13.4%)
Some thinkings and hypothesis about the observed phenomenon :
Today, after some tests with the SP-Gen, my main hypothesis is that the
train of Soliton pulses is produced by an avalanche e?ect of the domains
walls in the ferrite core. The strong back EMF pulse initiates the motion of
the Bloch walls which surround the magnetic domains. Then the avalanche
waves of the Bloch walls go back and forth along the ferrite rod as a Soliton
wave which moves back and forth in a long and rectangular tank (lled with
water. The avalanche e?ect of the domains walls is able to produce an
induction with a very weak magnetic (eld, this is the well known Barkhausen
e?ect
6
discovered in 1919 by Heinrich George Barkhausen
7
. The most
interesting fact to study here in this experiment, is that the Barkhausen
jumps seem to move themselves autonomously in the ferrite rod after that
the back EMF pulse which as initiated the process has vanished.
Today, it's still an hypothesis and more tests and deep investigations need
to be conducted to conrm this fact...
See also :
Tests of the EM Soliton pulses through an EM Shield