[time-nuts] magnetic electronic components

Tim Shoppa tshoppa at gmail.com
Tue Jun 23 07:25:57 EDT 2015

"Experimental Methods in RF Design" has a half-dozen pages specifically on
the choices of powdered iron and ferrite materials, and lots of working
circuits and designs with measurements. Aka EMRFD.

Here in the USA, iron powder and ferrite cores of many different materials,
sizes, and a few shapes are available from Amidon and kitsandparts.com.
Many useful ferrite cores for multi-turn transformers and chokes, are sold
as "EMI beads" by Mouser and Newark and other mainline distributors. I
don't know too much about easy availability in EU.

Tim N3QE

On Mon, Jun 22, 2015 at 3:02 PM, Attila Kinali <attila at kinali.ch> wrote:

> Hi,
> I was looking up some stuff and realized (again) that I don't know
> anything about how magnetic electronic components (inductors/solenoids,
> transfomers, baluns, ferrite beads...) work. Yes, I can calculate
> the inductance, I know how to get from the AL value to number of
> windings. But I don't know anything about the practical issues
> or where they come from. Unfortunatelly, this knowledge seems to
> generally rare among EEs (at least everyone I asked in the last
> couple of years) and books about it are either long out of print
> (with no pdf available) or more geared towards the physics student.
> So, does anyone have any recomendation where I could read up
> on this? Books, pdfs, webpages,... anything.
> Also something that covers more the application side, ie how to
> use ferrite beads/toroids to build devices, would be appreciated.
> Thanks in advance
>                         Attila Kinali
> --
> I must not become metastable.
> Metastability is the mind-killer.
> Metastability is the little-death that brings total obliteration.
> I will face my metastability.
> I will permit it to pass over me and through me.
> And when it has gone past I will turn the inner eye to see its path.
> Where the metastability has gone there will be nothing. Only I will remain.
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