ams has introduced a power management IC for LED-based lamps and luminaires which uses closed-loop sensing to maintain more accurate correlated colour temperature (CCT) and lumen output. Following the AS7221 smart lighting manager introduced earlier this year, this new device, the AS7220, combines a precise calibrated-for-life colour sensor with an intelligent Cognitive Lighting Engine for standalone ...
Read full article: ams uses closed-loop sensing for tight LED light control
from Electronics Weekly https://www.electronicsweekly.com/news/ams-uses-closed-loop-sensing-tight-led-light-control-2017-05/
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