Recent content by wimpy69

At your LED driver the neutral and phase from the mains are reversed, this causes a current leak through the LEDs. Simply reverse them back.

Probably it's the bbspils grow you are referring to. Keep in mind that He supplements with an UV-B reptile light (I think) which would compensate somewhat for the lack of blue; He has Cree CXA which have a lot more blue (and less red) than the Bridgelux Vero at the same stated color temp...

Lenny I measured the chip area and it's 1x1mm^2 which would make it 42 mil. Didn't know the rule about "42 mil = 2W, 45 mil = 3W". I have a 620nm red off the same size so this must then be 2W as well. About the efficiency of the Epileds, you are saying that a luxeon is 2 or 3 times more...

Nice to see the exact same chip pattern in these specs, thanks for the link. I think (hope) that the document is outdated as it is over three years old. Either that or I was scammed... Satisled sells this LED as a 660-670 nm chip that can take 750mA. After a bit of testing they seem to tell the...

For reference, here is a mugshot of a recent 3W 660nm Epiled obtained from Satisled. The pattern is slightly different from the others. Btw I wonder how efficient these are compared to Luxeon ES 660nm.

OP is linking to his own Ebay auction, in other words this is spam.

Looks sweet... There must some other LED drivers that are not in the last picture, right? Do these drivers get very warm?