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Old 31st March 2004, 09:15 AM   #1
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Default Extra iron powder toroids, any ideas?

Ok, so I slipped up and ordered the wrong toroids for my SMPS project. I got iron powder instead of ferrite, and they can't be returned. The permeabilities on these are way too low to be useful for the SMPS I had originally been planning, so any ideas on what else I can do with them? I can't return them. They're all 2" diameter, two are .75" tall and two are 1" tall. Permeability is around 160 for this material.
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Old 31st March 2004, 10:03 AM   #2
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Hi,

Those will make nice power filter chokes. For output filtering als well as for input filtering of you final SMPS. Although 2 ones are somewhat big for this purpose.

Also these ones are good for a fly-back transformer.

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Old 8th April 2004, 03:24 PM   #3
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hmmm. yep, they are pretty big. Do you know where I can get info on flyback transformers? I have never really been interested in them because I had heard that they're not very good for high power applications (such as audio), but maybe I'll take a look at them...otherwise i am thinking about either trying to pawn them on EBAY or gluing them together and making a pen holder.
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