i'm doing some experementing and i walkt agenst somthing,
how is it possible that inductence goes down when i add a core aluminium and or iron, with core the 78.4uH and 144.89uH without the core...???
can someone tel me way this happens.? :huh:
Hmm inductence... the counterforce or current that works opposite the primairy current or magnetic force.... not correct, its working against the change in force...the change in flux, the change in field captured.
So it works against (delta)direction and (delta)intensity in relation to the outside of the capturing loop.
If i have a loop where the inside and the outside have the same fluxdensity and direction..then the loop feels no difference inside and outside itself....so then the inductence should go to zero.
The metal core in a coil uses its electrons on the outside of the core to concentrate the field to that outside surface. Inside the metal core itself there is no magnetic force present and are no electrons busy with the outside influence.
The metal outside works nicely when using a transformer, it follows the form of the core right into the other coil.
But your question is how come in your case the inductence is higher without the core. Normally the iron core makes sure that any fluxchange at one end is carried through the whole coil, thus maximizing the captured change en so the inductence.
So to understand it better we have to know the setup in which your findings occur.
Puzzling..
:)