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October 13th 06, 07:05 PM
posted to rec.radio.amateur.homebrew
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testing ferrite or iron powder toroids as to mix
Hi all,
Is there an easy way to test surplus toroids as to what mix they might be? I have some here with no markings (plain black powder) and I would like to see what frequency ranges they would be useful at. I guess I would have to wind up a transformer and plot the frequency response? Dave |
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