NDLI: Dynamic operation of magnetic reed relays

Content Provider	IEEE Xplore Digital Library
Author	Cornu, J. Copeland, M.
Copyright Year	1965
Abstract	A model is developed for the dynamic operation of magnetic reed relays. From experimental data, it is found that the processes of dynamic magnetization and mechanical motion can be treated as separate and consecutive in time. Remarkable agreement was found between the experimentally determined static magnetic force and a force calculation based on an assumed domain structure inside the reed tips. The model basically assumes that the flux passes through the air gap in two areas near the tips of the reeds, each area equals half the cross-sectional area of the reed. The dynamic magnetization process is modeled with an improved version of Agarwal's [7] model for eddy-current losses in laminations, and a differential equation for dynamic reed motion is derived. The very good agreement between theoretical and experimental results shows that this model gives a good representation of the dynamics of the system. Furthermore, the findings of the static force model based on domain concepts have basic application to the knowledge of magnetics in addition to the application here to reed relays.
Sponsorship	IEEE Magnetics Society
Starting Page	698
Ending Page	703
Page Count	6
File Size	839792
File Format	PDF
ISSN	00189464
Volume Number	6
Issue Number	3
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1970-09-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Relays Magnetic flux Magnetic separation Magnetization Magnetic domains Switches Magnetic analysis Force measurement Delay effects Permanent magnets
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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