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Demand-controlled lightingAutomatic lighting is controlled by photocell that measures intensity of available light. Photocell drives motor which operates mercury switches controlling indoor illumination sources. Device effects increase in indoor illumination intensity when illumination input to cell is insufficient. Reverse is true if input is too great.
Document ID
19770000023
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Owens, L. J.
Date Acquired
August 8, 2013
Publication Date
June 1, 1977
Publication Information
Publication: NASA Tech Briefs
Volume: 2
Issue: 1
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
KSC-11010
Accession Number
77B10023
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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