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mike

On 8/14/2012 10:39 PM, wrote:
I have a couple of things in mind and I would like a source for those BIG toroidal ferrite cores. I can deal with painting the wire and wrapping it because you don't need that many turns. Really I can strip some 10 guage or something, maybe even fatter.

This of course yields what the problem is _ I want like an ID of AT LEAST an inch, a thickness of ¼ inch or better which gives an OD of 1½". The height should be approximately ½ - ¾ inch.

J
It's not nearly that simple.
Toroids come in a wide range of permeability, saturation characteristics
and frequency ranges.
Here's a place to start
https://www.amidoncorp.com/