HI MACEDONIA CD I MADE SOME LIKE TPU IS FORKING MORE THEN INPUT

[Feynman]

Hey EM, maybe you can clear this up for me...  let's say I have a ferrite rod with like 2000 initial permeability.  Let's say I really juice it with some amps. Once the ferrite hits saturation, does it lose inductance?  Like the millihenries go down?   Or does it just "hit a wall" so to speak, and can't absord any more flux?   Where does the extra flux go?   Thanks

[EMdevices]

Hey EM, maybe you can clear this up for me...  let's say I have a ferrite rod with like 2000 initial permeability.  Let's say I really juice it with some amps. Once the ferrite hits saturation, does it lose inductance?  Like the millihenries go down?   Or does it just "hit a wall" so to speak, and can't absord any more flux?   Where does the extra flux go?   Thanks

Hi Feynman,  you mentioned the answer:   it looses the inductance.

to expand on this,   the flux that has built up is still present in the core,   so since the core is maxed out, or saturated, this means all the domains are aligned,  so the core can NOT contribute anymore domains beyond that point if the current is increased. 

So what alingns the domains?  well, it's the current that flows through the windings and produces a magnetic field.   So at a particular level of current (and it's associated magnetic field)  the core gets saturated.   If we increase the curent beyond that point,   the flux will go up,  but now it is only the flux of the coil as if it was wound with an air core, i.e.  the core is useless magneticaly beyond that point, and might as well be thought of as a dielectric or some material with no magnetic properties.

Hopefully it is realized that the energy we have put in, and the flux, is still present in the inductor, nothing has been lost, it's just that beyond the point of saturation the rate of change of the flux with the current in the windings changes radically  (it's not like a "wall"  or sudden change, it's gradual and depends on the type of material)

EM

P.S.  Notice it's a gradual change, but can look like a "sharp" transition depending on the level of magnification.

[sparks]

@EM

     So instead of wasting energy of the pulse saturating the core,  the hf pulse can travel on about the torroid.   Something like a magnetic amplifier amplifying a signal that is stronger than the bias energy?

[FatBird]

Good point.

[Feynman]

Thanks EM, appreciate the info