NASA NTRS · 19660000395
Solid state detectors monitor relay contacts
Abstract
Hand carried, solid state, 18-channel detector system constantly monitors contact conditions in relays. The system is relatively insensitive to external noise and is powered by standard 110 volt ac.
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Quinn, J. D.. 1966-09-01. Solid state detectors monitor relay contacts. https://ntrs.nasa.gov/citations/19660000395
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