ttystikk
Well-Known Member
What do you mean by that? By rating.
So a Cree CXB3590 COB LED chip can be run as high as 110W. This is its nominal rating. Running it this way will result in efficiency of about 45%. Running it at 50W returns 56% efficiency, but uses twice the number of chips at fifty dollars each. Going even further, running the same chip at 23W gives 64% efficiency! ...at the up front cost of twice again the number of chips. What the user wants determines the efficiency vs cost level that makes most sense to them.