NASA NTRS · 19660000269
Magnetically operated limit switch has improved reliability, minimizes arcing
Abstract
Limit switch for reliable, low-travel, snap action with negligible arcing uses an electrically nonconductive permanent magnet consisting of a ferrimagnetic ceramic and ferromagnetic pole shoes which form a magnetic and electrically conductive circuit with a ferrous-metal armature.
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Steiner, R.. 1966-06-01. Magnetically operated limit switch has improved reliability, minimizes arcing. https://ntrs.nasa.gov/citations/19660000269
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