[time-nuts] magnetic electronic components

Pete Lancashire pete at petelancashire.com
Fri Jun 26 13:51:23 EDT 2015


>BTW: I really like to work with Würth. I know very few components companies
>that go so much out of their way to help a struggling engineer to get his
>project done. And they never ask about the volume of your project. You need
>help, you get help.

In the US if you live in a area that has a local Allied or similar
mega-distrib's office, get to know one of the sales or technical reps in
the office. Quite easy to do if you go to a few of the free seminars they
always host. Most of the technical guys and gals are very open to helping
the little guy. Be honest that your interest is for yourself or your a one
man show.



On Fri, Jun 26, 2015 at 5:34 AM, Attila Kinali <attila at kinali.ch> wrote:

> Moin!
>
> Thanks for all the answers and sorry for my late reply.
> I tried to at least skim trough the suggestions before.
>
> I would like to reply in one big mail instead of many small
> ones, in order not to clutter the mailinglist too much.
>
> On Tue, 23 Jun 2015 00:15:29 +0100
> Adrian Godwin <artgodwin at gmail.com> wrote:
>
> > Although it's published by a vendor, this applications manual has a lot
> of
> > useful information.
> >
> >
> http://www.we-online.com/web/en/electronic_components/produkte_pb/fachbuecher/Trilogie.php
>
> Even though, I do not own a copy of The Trilogy, I know of it.
> It does a good job of covering the basics. But unfortunately, it
> does not contain much about the theoretical background, so does
> not help much in understanding how to work around the physical limits
> of cores. Other than that, I would recommend this book to every
> practicioning
> electrical engineer.
>
> On Mon, 22 Jun 2015 18:56:02 -0500
> Bob kb8tq <kb8tq at n1k.org> wrote:
>
> > You have two choices:
> >
> > 1) Read the physics stuff
> > 2) Go back far enough that the divide had not occurred ( <= 1950’s).
> >
> > Sorry about that ….
>
> Yes. I came to a similar conclusion. What irks me is, that this is
> the conclusion I came to with many topics in electrical engineering.
> At some point people decide that it is either too difficult to deal with
> or a solved problem and ignore it completely from then on. And if you
> are an engineer who tries to actually understand things instead of just
> repeating what some senior engineer told you long long ago, then you
> run up against walls. :-(
>
> On Mon, 22 Jun 2015 20:24:14 -0700
> Jim Lux <jimlux at earthlink.net> wrote:
>
> > the best, and probably the only, book is the one by E.C. Snelling.
> >
> http://www.amazon.com/Soft-ferrites-properties-applications-Snelling/dp/0592027902
> >
> > 1969 edition is
> > https://archive.org/details/SNELLING__SOFT-FERRITES__1969
> >
> > and it's not like the properties of magnetic fields have changed.
>
> Cool! Thanks a lot! I was looking for this, but couldn't find it.
> I somehow missed that archive.org had a copy.
>
> On Tue, 23 Jun 2015 07:25:57 -0400
> Tim Shoppa <tshoppa at gmail.com> wrote:
>
> > 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.
>
> Buying cores is not much of a problem. For one there are the distributors
> you have mentioned, for another we have companies like Würth here in
> Germany and Coilcraft in the US who are no afraid of selling single pieces
> (if they dont just regard it as samples).
>
> BTW: I really like to work with Würth. I know very few components companies
> that go so much out of their way to help a struggling engineer to get his
> project done. And they never ask about the volume of your project. You need
> help, you get help.
>
>
> Thanks for all the replies and suggesttion. And sorry if I don't answer all
> of them individually.
>
>                         Attila Kinali
> --
> It is upon moral qualities that a society is ultimately founded. All
> the prosperity and technological sophistication in the world is of no
> use without that foundation.
>                  -- Miss Matheson, The Diamond Age, Neil Stephenson
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