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What Are "COB" LEDs and Why Do They Matter?
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File:High Power COB-LED with low current at 5pct.JPG - Wikimedia Commons
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What Are "COB" LEDs and Why Do They Matter?
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Controlling the brightness of an 9W COB LED with a potentiometer : r/AskElectronics
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LED lamp - Wikipedia
cob - Wiktionary
