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In order to make the main text less cumbersome, such reviews are presented as appendices. Throughout this edition, the mksa-unit system is used in accord with the latest recommendation for standardization of units in scientific and technical writings. The chapter "History of Early Investigations on Contacts" forming Part IV in the preceding edition of has not been repeated in this book.

The load bearing contact area as a function of load and elastic and plastic properties of the members. The relation between contact load and resistance, particularly at moderate and high load. Distribution of the temperature in a symmetric constriction with circular contact surface at given current.

The equilibrium temperature distribution in the constriction of a contact between two metals with different conductivities, both obeying Wiedemann-Franz law. Thermoelectric effects. Temperature distribution in the constriction of a contact between members of very different conductivities. Resistance-voltage characteristics of clean symmetric contacts. Softening and melting voltages. Growth of visible oxide films on metals at moderate to high temperature. Decomposition at still higher temperature. Adherence in dry contacts which are not heated to any influential extent by the current.

Adherence in contacts that are heated by the current passing through them. Resistance welding. Theory of friction and wear of carbon contacts.

Electric Contacts: Theory and Application - Ragnar Holm - Google книги

Lubrication by means of solid lubricants as graphite and molybdenum disulfide. Electrical performance of carbon brushes on rings and commutators when arcing is excluded. The temperature in the sliding contact between a carbon brush and a copper ring or commutator. VI-characteristics of the stationary arc in air; their use for calculation of the duration of drawn short arcs.

Arc duration on breaking contact without quenching. Circumstances common to Communication Engineering. Quenching of arcs by a resistance parallel to the operating contact or to the inductive coil. Details about the types of arc in relay contacts and the material transfer produced by them.


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Erratum to: The influence of the Joule heat on constriction resistances in symmetric contacts. Erratum to: The equilibrium temperature distribution in the constriction of a contact between two metals with different conductivities, both obeying Wiedemann-Franz law. Erratum to: Resistance-voltage characteristics of clean symmetric contacts.

Erratum to: The temperature in the sliding contact between a carbon brush and a copper ring or commutator. Erratum to: Quenching of arcs by a resistance parallel to the operating contact or to the inductive coil. Erratum to: Details about the types of arc in relay contacts and the material transfer produced by them. JavaScript is currently disabled, this site works much better if you enable JavaScript in your browser. Free Preview. Buy eBook.

2nd Edition

Buy Hardcover. Buy Softcover. FAQ Policy. About this Textbook This book is a completely revised and rewritten edition of "Electric Contacts Handbook" published in Show all. Table of contents 89 chapters Table of contents 89 chapters Introduction. A simplified summary of the theory of stationary electric contacts Pages Holm, Ragnar, Ph. The contact surface Pages Holm, Ragnar, Ph. The contact resistance. General theory Pages Holm, Ragnar, Ph. Introduction to thin films on contacts.

Contact cleaning Pages Holm, Ragnar, Ph. The load bearing contact area as a function of load and elastic and plastic properties of the members Pages Holm, Ragnar, Ph. The relation between contact load and resistance, particularly at moderate and high load Pages Holm, Ragnar, Ph. Contact resistance on freshly cleaned rods in air at very small contact loads Pages Holm, Ragnar, Ph. The inductance of a current constriction. Skin effect Pages Holm, Ragnar, Ph.

Electrodynamic repulsion in a symmetric contact of non-magnetic material Pages Holm, Ragnar, Ph. The capacitance of a contact. Electrostatic attraction in a contact Pages Holm, Ragnar, Ph.


  • Physics of Electric Contacts | Nature!
  • Electric Contacts Theory Applications by Holm.
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  • Kohler effect Pages Holm, Ragnar, Ph. The influence of the Joule heat on constriction resistances in symmetric contacts Pages Holm, Ragnar, Ph. Distribution of the temperature in a symmetric constriction with circular contact surface at given current Pages Holm, Ragnar, Ph.

    Thermoelectric effects Pages Holm, Ragnar, Ph. Temperature distribution in the constriction of a contact between members of very different conductivities Pages Holm, Ragnar, Ph. Softening and melting voltages Pages Holm, Ragnar, Ph. Development of the temperature in a metallic current constriction Pages Holm, Ragnar, Ph. Growth of films on metals used for contacts, near room temperature Pages Holm, Ragnar, Ph.

    Decomposition at still higher temperature Pages Holm, Ragnar, Ph. Water film, local cells and rusting Pages Holm, Ragnar, Ph. In order to make the main text less cumbersome, such reviews are presented as appendices. Throughout this edition, the mksa-unit system is used in accord with the latest recommendation for standardization of units in scientific and technical writings. The chapter "History of Early Investigations on Contacts" forming Part IV in the preceding edition of has not been repeated in this book. Get A Copy. Hardcover , pages. Published November 1st by Springer first published August 1st More Details Original Title.

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