eightpositioneightcontact

eightpositioneightcontact is a term used in mechanical and electrical design to describe a rotary switch or encoder topology featuring eight discrete angular positions and eight corresponding electrical contacts. In this configuration, rotation places a switch element, such as a wiper or contact arm, to align with a specific contact, creating a defined electrical state for each position. The term appears in design guides, manufacturer catalogs, and educational materials to denote a straightforward one-to-one contact arrangement.

Variants of eightpositioneightcontact include single-pole and multi-pole implementations. A common form uses one movable contact that sequentially bridges one of eight fixed contacts as the shaft rotates. Multi-pole versions replicate the eight-contact pattern for additional circuits, allowing synchronized switching of several signals while maintaining eight distinct positions. Some designs incorporate detents or tactile feedback at each position.

Key considerations when implementing eightpositioneightcontact include contact rating, debounce behavior, mechanical wear, and environmental exposure. Material choices for contacts—such as plated copper, silver, or gold plating—affect longevity and current carrying capability. Proper actuation, lubrication, and sealing reduce wear and corrosion, while careful layout minimizes crosstalk between adjacent circuits.

Applications include instrumentation, laboratory equipment, educational kits, vintage audio devices, and control panels where a compact, fixed eight-position switch is required.

Related topics include rotary switches and encoders.