Extra iron powder toroids, any ideas?

tennisballg · 31st March 2004, 09:15 AM

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.

Pjotr · 31st March 2004, 10:03 AM

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.

tennisballg · 8th April 2004, 03:24 PM

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.

31st March 2004, 09:15 AM	#1
tennisballg diyAudio Member Join Date: Feb 2004 Location: Utah	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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31st March 2004, 10:03 AM	#2
Pjotr diyAudio Member Join Date: Nov 2002 Location: Netherlands	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.

8th April 2004, 03:24 PM	#3
tennisballg diyAudio Member Join Date: Feb 2004 Location: Utah	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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