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Registered Member #1321
Joined: Sat Feb 16 2008, 03:22AM
Location:
Posts: 843
If you buy a set of big U core pieces from TSC, you might want to ask if they can select two for you that are dimensionally close.
Being that the manufacturing tolerances on the width are rather loose, you could conceivably get one that's, say, 0.05" oversize, and another that's 0.05" undersize...making it hard to work with the core as far as mechanical considerations are concerned.
Also, what I do is to take a small diamond-grit file and round off the sharp edges on each leg of the "U" (i.e., the four 1.25" long sharp edges parallel to dimension "C" shown in fig. 4). It only takes about 5 minutes to do this to each core half.
Rounding these edges seems to make them less prone to chipping; also, rounding them off should reduce the electric field enhancement that can occur at these edges under certain conditions.
Registered Member #2431
Joined: Tue Oct 13 2009, 09:47PM
Location: Chico, CA. USA
Posts: 5639
SublimeVolts wrote ...
thanks Patrick i will check it out
EDIT: The biggest winding window i can find is 2 inches ?
you may never find that kind ever again, but i was considering using the largest dremel diamond wheel as a tiny table saw then buying rectanugular slabs or round bars, and cutting 45 and 90 degree edges to make odd sized cores.
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Buying a big ferrite core
