Those ferrites in power supplies are not iron core. The only place I've seen iron core chokes are in HF communications equipment.
Mike n2MS
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On 03/11/2023 6:27 PM W0LEV <davearea51a@...> wrote:
Powdered iron cores are all color coded. In general, ferrite material is
not color coded, although some suppliers may.
Dave - W?LEV
On Sat, Mar 11, 2023 at 11:24?PM N2MS <mstangelo@...> wrote:
Bryan,
Those power supply ferrites are useful for low frequency power or choke
applications but are not that useful for HF balun, unun or transformer
applications. The unknown ferrites I find useful are those split ferrites
placed on cables for RFI attenuation. Most are designed for VHF attenuation
and are similar to the Fair-Rite 43 mix.
There is no standard color code. The colors are probably unique to the
manufacturer.
Mike N2MS
