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1. LF: RE: Ferrite toroid cores using HEM series materials (score: 1): Author: Reeves Paul <[email protected]>; Date: Thu, 29 Jan 2009 12:13:44 +0100; Hi John, Enclosed is the data from Maplin on these cores. Hope this is ok, not been able to find any more data. regards, Paul Reeves G8GJA Technical Specification Order Part Max Max Min Attenuation (; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00498.html (11,544 bytes)
2. Re: LF: Re: Ferrite toroid cores using HEM series materials (score: 1): Author: "John RABSON" <[email protected]>; Date: Sat, 31 Jan 2009 16:42:33 +0100; Paul, David, Alan, Jim, LF, (and anyone I may have left out) Many thanks everyone for your replies and very useful information. What kicked my request off was the need to make an input transformer fo; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg00698.html (10,910 bytes)
3. LF: Re: Ferrite toroid cores using HEM series materials (score: 1): Author: "James Moritz" <[email protected]>; Date: Thu, 29 Jan 2009 23:04:16 +0100; Dear John, LF Group, Most of these "EMC" cores are made of something similar to Fair-Rite #43 material, with mu of around 850. They will work quite well at LF and MF, although a given size of core wi; /rsgb_lf_group-archives/html/rsgb_lf_group/2009-01/msg01071.html (10,982 bytes)

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