LED driver questions.....

weirdingway said:

since youre in Oregon do you know that guy who builds the Black Diamond lights? i forget his name but this is his site.

http://www.perfectsunled.com/

and yes...if those citizen cobs are as good as they look im almost afraid they will get too popular and hard to buy.......do you think theres any chance small light businesses will start snatching them up? thats what i would do if i was going to start a grow light company....

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nfhiggs said:

If you buy 10 at a time the price drops to less than $2 a pop. I've purchased from this particular seller before (just ordered 10 more in fact) and he is pretty good. He sent me a replacement for one of mine no questions asked.

It will push as much as 400W total divided into however many COB's you want to use. Four COBs at potentially 100W each. The thing to keep in mind is that with COB's (and LED's in general) their efficiency drops the harder you drive them. So you will actually get more total light with 8 COBs at 50W each than you will with 4 COBs at 100W each. I generally suggest driving them at 50% of their rated power.


If you look to the left of the power terminals you will notice a green power light and a little orange adjustment right next to it. You adjust it with a small flat screwdriver.

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Jellypowered said:

Wait, if you recommend each cob half power, thats 1.5a per cob. 1.5*8 that's 12A total. The power supply wouldn't handle that. Here's my spreadsheet i'm working on. 900w fixture for 200 bones doesn't seem bad lol.
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