Priniciples of Electromechanical Relay Operation


3.26 Characteristics of Relay Stepping Switches

The principle of operation of the rotary stepping switch is the same as that of the armature type relay. In these designs, linear motion of the armature is translated through linkages into rotary motion. Pulsing speed is closely related to design and circuit conditions. These devices are quite flexible with regard to their pulsing characteristics and the functions they can perform. Manufacturers’ catalogs usually provide considerable information on capability. It would be advisable, however, to consult the manufacturer concerning special applications.

Stepping switches are available with gold plated, base metal and precious metal contacts. The subject of stepping switches and their application is treated comprehensively in other publications. Note, however, that the application of different potentials to adjacent wipers of stepping switches should be avoided. (See Chapter 2 also). Also, do not parallel contacts expecting higher cuffent capability.