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Thought about it some more and called DigiKey -- what the heck, I bought 18 strips from them, and one has 4 LEDs out. They were great and are shipping me a replacement. If anyone thinks there could be anything about my configuration that's at fault, please let me know before I do more damage...

I just finished a build of two roughly 2ft x 2ft lights, each with 9 Bridgelux EB strips (22 inch) run off a Meanwell HLG-120H-C700B. The first one, no problems. When I fired the second one up for the first time this morning, only two LEDs on one of the end strips lit. Strange. As soon as I...

I just looked at Duracell's data sheet for their AA coppertop batteries. They will put out 700mA for a little while. But at 1.5V each I'd need to wire up 15 of them... Probably easier to just wire up my 11 LED strips and connect them to my Meanwell driver. (Can't get close enough to 22V with...

Ahh. 8mA certainly won't do it... Thanks.

Very good to know -- thanks. Maybe I'll test with the poke-ins and then solder. Also good news. I have a bunch of 1 inch wide 1/16 inch aluminum strips and angles that I plan to mount mine on, so it sounds like heat will be no problem. 11 of the 22 inch strips for a 2ft x 4ft space? Are you...

Thanks! -- Second dumb question: It's plenty of work to try a quick test with my Meanwell driver -- I'll have to wire up 9 strips. But if I cobbled together some collection of batteries to make 22 volts, could I just hook that up? The strips are supposed to use 22.1 V at 700 mA; my naive...

I have my 22" strips and am getting ready to wire them up. Maybe a stupid question: Each strip has four connectors on it -- two positives and two negatives, with a pair of each at either end of the strip. I'm guessing that's for convenience, and that I can use either pair. (Good so far?) Can...

Nice -- thanks for the tip. Maybe I'll experiment... Still hoping someone will comment on post #69 (dude...). Heading out of town until Tuesday, so I'll be offline until then, but looking forward to checking in.

In any case, I just ordered two HLG-120H-C700-B drivers from Arrow, and 18 of the 22 inch, 3000K EB strips from DigiKey. Time to start searching for aluminum...

Just to see if I really get it: The HLG-120H-C700 has an output voltage of between 107V and 215V. So it can power between 5 and 9 EB strips (at 22.1V each). I think I could run just 5 strips on it for veg, and still be able to dim it to half current, so I'd be running 5 strips at 350mA. But...

I haven't bought them. I picked 20 because that gives me 50,000 lumens (really 21 would be closer, but you can't split 21 across 2 lights). 50,000 lumens is the round number, but I didn't make it up -- found it somewhere... In any case, I've been thinking 18 on two HLG-120H-C700s is probably...

No worries -- learning is time well spent. But I better walk away from this computer now while I still have some feeling in my ass... -- back at it tomorrow. Thanks again for your help.

Ah, but the LPC-100-700 is not dimmable. Well, cool. I guess I should be thinking harder about these. (Just blew most of a day sitting in front of the computer learning everything I can about drivers, but oh well -- what's another few hours...) Also cool -- in a 2x4 space? Do you find that...

There's also: LPC-100-700: A 100W constant current driver, plastic (instead of metal) casing. Meanwell doesn't give as much efficiency information as they do for their HLG series, but they describe it as 90% "typical" efficiency. That's very close to the HLGs when they're running on 115V AC...

Okay, there's no such thing as an HLG-150H-700. Sorry about that. I mean the HLG-150H-24. A "constant voltage and constant current" driver, which sounds too good to be true, and probably is. It's "constant current region" is listed as 12V-24V, which is right on -- I need between 20.5V (min)...

I definitely don't get it. That driver can output 215V. The minimum forward voltage of an EB strip is 20.5V. So 10 of them in series would require at least 205V. So shouldn't they light up? They can get to 21.5V each... Does the "typical" voltage of 22.1V mean that they might actually need...

Driver questions (this is per fixture -- each fixture is 2ft x 2ft, planning to run 10 strips): HLG-185H-C700: This would do it, with room for 2 more strips (for a total of 12 per fixture), if I wanted to add some in the future. On the downside, its output voltage range is 143V - 286V, which...

I'm finally ready to understand this suggestion (I think...). I think what you must mean is 2 panels with 12 strips each, with each one powered by its own HLG-185-C700A. That would then give me between 200W and 400W (as these are rated at 200W each, and then can be dimmed to half power)...

running them at 700ma...

Yeah, in a series circuit I just have to make sure I stay within the output voltage range -- that's what governs how many I can switch off. And good point -- running it on multiple drivers would make it even more flexible, at the expense of the extra components. (Have to start pricing drivers...