Elektrische Kontakte / Electric Contacts Handbook

Stationary Contacts

1. Introduction. A simplified summary of the theory of stationary electric contacts

   • Ragnar Holm

   Pages 1-8

2. The contact surface

   • Ragnar Holm

   Pages 8-10

3. The contact resistance. General theory

   • Ragnar Holm

   Pages 10-12

4. Calculation of constriction resistances with constant resistivity ϱ

   • Ragnar Holm

   Pages 13-20

5. Constriction resistances when conditions deviate from those in § 4, but with ϱ still being a constant

   • Ragnar Holm

   Pages 20-25

6. Thermal constriction resistance

   • Ragnar Holm

   Pages 25-27

7. Films on electric contacts, particularly adhesion films

   • Ragnar Holm

   Pages 27-33

8. The contact surface as a function of load, elastic and plastic properties of the members

   • Ragnar Holm

   Pages 33-39

9. The relation between contact load and resistance, particularly at moderate and high load

   • Ragnar Holm

   Pages 39-48

10. Contact resistance on freshly cleaned contacts at very small contact loads

    • Ragnar Holm

    Pages 48-51

11. The inductance of a current constriction Skin effect

    • Ragnar Holm

    Pages 52-55

12. Electrodynamic repulsion in a symmetric contact of non-magnetic material

    • Ragnar Holm

    Pages 55-56

13. The capacitance of a contact Electrostatic attraction in a contact

    • Ragnar Holm

    Pages 56-59

14. Measurement of the load bearing contact area

    • Ragnar Holm

    Pages 59-65

15. The relationship between electric potential and temperature in a current constriction which is symmetric with respect to the contact surface; that is, the φ-ϑ relation

    • Ragnar Holm

    Pages 65-70

16. The φ-ϑ relation in cases of dissymmetry

    • Ragnar Holm

    Pages 70-75

17. Kohler effect

    • Ragnar Holm

    Pages 75-78

18. The influence of the Joule heat on constriction resistances

    • Ragnar Holm

    Pages 78-84

19. Distribution of the temperature in a symmetric constriction with circular contact surface at given current, I

    • Ragnar Holm

    Pages 85-86