NDLI: Powdered iron cores for RF magnetics

Content Provider	IEEE Xplore Digital Library
Author	Smith, T.
Copyright Year	1999
Abstract	Investigations were made to determine what are the effects of varying specific materials and conditions during manufacturing of powdered iron magnetic cores on the initial permeability and Q of the core. Discussions are limited to core material mixes used for RF frequency applications. The following are discussed: (a) the effect of different binder resins on Q and T/sub c/; (b) the effect of differing proportions of insulating acid and resin on inductance and Q; (c) comparison of inductance and Q produced by different material mixes; (d) the effect of pressure applied during molding (material density) on inductance and Q; and (e) an example of improving Q for production cores. This study was proposed to provide information that could be used to improve production yields when winding on powdered iron cores. Improvement of these yields was to be made by improving the performance of the core itself. Specifically, by determining means by which higher Q could be obtained from the core material and how tighter control of initial permeability of the core (and hence inductance) could be achieved.
Starting Page	107
Ending Page	115
File Size	361290
Page Count	9
File Format	PDF
ISBN	0780357574
ISSN	03622479
DOI	10.1109/EEIC.1999.826190
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1999-10-28
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Iron Magnetic cores Radio frequency Inductance Magnetic materials Permeability Resins Production Manufacturing Insulation
Content Type	Text
Resource Type	Article

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