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From: Spehro Pefhany
Subject: Re: Core gapping techniques and general SMPS magnetics stuff
X-Newsreader: Forte Agent 1.92/32.572
Date: Sat, 14 Dec 2002 22:29:19 GMT
NNTP-Posting-Date: Sat, 14 Dec 2002 17:29:19 EST
On Sat, 14 Dec 2002 21:21:06 GMT, the renowned Chris Carlen
>So I will have to gap my cores. How do you folks gap E-cores for
>prototype/low volume applications? Obviously it's not that hard to
>figure out a way, but I'm curious how others do it too. I'll probably
>cut out some shim material, epoxy it to the outer legs, and hold the
>halves together gently in a vice until it all sets up. Then I can soak
>it in acetone later for a day if I want to disassemble it.
Shims work fine for testing. You can even get glass microspheres to
do precision gapping. Clips are nicer for testing than epoxy.
Don't forget to make the shims half the gap you'd use if it was
a single gap in the center leg of the E.
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