Adam Field wrote:
> So now that I can calculate the saturation point, what happens to
> inductance? I know it doesn't drop to zero...

Close, actually.  The knee is somewhat soft, but yes, that's what
"saturation" is.  The core can store no more magnetic energy.  It is full.
You now have a air core inductor for incremental currents above the
saturation threshold.

> I know I'm off into elf zone with this, but I know it can be solved
> with a mixture of work done by Ampere and Maxwell and perhaps others.

No, you're screwed.  You can't cheat physics.  You're going to need a really
big core no matter how you try to jiggle the number.

Another way to look at saturation is that the core material can only hold so
many joules per cubic meter.  Above that it transitions roughly to a air
core inductor.  Figure out how many joules our inductor needs to hold, then
look up some core material, then realize it's going to be big.


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