|1st December 2010, 05:08 AM||#21|
Join Date: Sep 2009
Location: City Of Villans
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to the OP air cores are technically better, but will saturate too eventually. this takes more current to cause though since the generated field is much larger and less densely packed than a ferrite/iron core. this can cause interesting situations where a pair of air cored coils can cross couple to eachother, if they are too close to each other and not perpendicular in one plane.
As Ron wrote, anything over 1 mH go ferrite/iron core or the filter Q will be naff, esp if like me, you wound 1mH AIR COR with a dcr of about 3 Ohms..................and thats on a good day.......
using a M20 bolt to physically join 2 together thru the centre makes for an intersting trannie though
in my home speakers have 5 amp rated ferrites in tweeter HP xover, and 10 amp rated ones in LP, dcr 0.15 OHM, they may rarely saturate, but only on the highest of reactive current peaks , and at higher volumes than i am capable of driving them so im happy with this school of thought.
Every new piece of knowledge pushes something else out of my brain - Homer.....................Simpson
Last edited by mondogenerator; 1st December 2010 at 05:24 AM.
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