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Testing two mains COB LED's from EBAY for grow light spectrum and PAR output efficiency. One is a 'blurple' and the other a warm white COB LED.

Excellent teardown video by bigclivedotcom 'Driverless 50W LED teardown and schematic' here: [ Ссылка ]

Results as follows:
Warm white:
48.8 Watts
31.7 PAR
0.65 PPFD/Watt efficiency
Spectrum: Warm white, 3100K
Link: [ Ссылка ]

'Blurple' COB
47.5 Watts
14 PAR
0.29PPFD/Watt efficiency
Link: [ Ссылка ]

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