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From: dana@lando.la.locus.com (Dana H. Myers)
Newsgroups: sci.electronics
Subject: Re: inductors (not chokes, not coils, inductors)
Message-ID: <17727@oolong.la.locus.com>
Date: 30 Sep 90 20:40:32 GMT
References: <39509@shemp.CS.UCLA.EDU>
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Organization: Locus Computing Corporation, Inglewood, CA
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In article <39509@shemp.CS.UCLA.EDU> loving@lanai.cs.ucla.edu (Mike Loving) writes:
>I am looking for a source for inductors in the 100uH to about 5mH range
>suitable for use in switching power supplies.  Active Electronics does
>not appear to carry such items, nor does ALL and Digi-Key's listings of
>inductors shows very low current limits (I assume this is due to  core
>saturation as well as power disipation in the parasitic resistance).
>I only need up to about an amp of current capability.
>
>Can anyone suggest a source for such inductors, or, failing that, for cores
>suitable for winding one's own inductors?

  I'd suggest winding your own power inductors. Contact Amidon Associates
for a copy of their catalog; it also contains data on core selection and
winding. The mailing address is:

  Amidon Associates
  12033 Otsego St.
  North Hollywood, CA  91607

  This address should still be good, though I haven't used it lately and
have heard that Amidon may have a new address. In my experience, Amidon
has always offered excellent service at reasonable prices. You can
expect to pay something like $2 to $10 for ferrite and iron powder cores
useful in switching supplies.

   Right now All Electronics is listing a large toroid which I figured out
to be a T-157-3 iron powder core for something like $1. This core may
be useful to you also. (The #3 material has a permeability of 35).

*****************************************************************
* Dana H. Myers KK6JQ 		| Views expressed here are	*
* (213) 337-5136 (ex WA6ZGB)	| mine and do not necessarily	*
* dana@locus.com		| reflect those of my employer	*
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