Have you ever wound your own Toroids? Man, that's a heck of a job!
My Brother-In-Law gave me a Toroid winding machine, which makes the task become somewhat pleasant!
I like the way Toroids retain their fields and don't have such a drammatic Inductive Coupling effect with other circuit elements.
I made a set of crossovers once, using Toroids for Inductors instead of the more commonly used Perfect Layer stacked Inductors.
Was great space saving, but the PL Inductors were easier to wind.
As you all mentioned, the Toroids have a high inrush value. Let me get out the Theory books regarding this, then I'll post a little data about it. I read about it back then [when?? even I don't remember!] and just can't recall the fine details.
Seems like the initial difference is the difference of overall conductor / winding length, then the alternate core material.
Let me verify this baloney.
Scott " 35 " Thompson
Just Say NO To Green Eggs And Ham!