Thanks but I literly never understand what you're saying. Everyone of your responses leaves me more clueless.just a PSA people should prob distinguish which of the vero 29s they are using as there are 3 different versions of the gen 7 (apart from older gens) - so sayng "vero29" is pretty much the equivalent of saying "i use cree" or "i use clu048" or "i use cobs"- which isnt
super helpful to the newbies
There are 3 versions of the Vero 29 Gen7.Thanks but I literly never understand what you're saying. Everyone of your responses leaves me more clueless.
You're reading it right and those are the right part numbers but there must have been a revision since then. The current revision is K, shows same output, slightly reduced voltage and slightly improved LPW numbers.Maybe I'm reading the wrong charts but this one says 37.2v @1400ma and 36.5v @1050. Anyway, I guess we'll find out!!
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Right, so he should make sure he knows what revision he's buying because it could make the difference between all 5 working or not. It's also likely that some shops don't even sell revision K and only have older stock.You're reading it right and those are the right part numbers but there must have been a revision since then. The current revision is K, shows same output, slightly reduced voltage and slightly improved LPW numbers.
interesting ill try to get my hands on some and test in the sphereYou're reading it right and those are the right part numbers but there must have been a revision since then. The current revision is K, shows same output, slightly reduced voltage and slightly improved LPW numbers.
My driver is 1400ma 4 cobs would put me at 200watts. I'm only one sq foot less than you but 125watts less than your set up. Doesn't seem like enough ?There are 3 versions of the Vero 29 Gen7.
The reason for the different versions is that a COB is a bunch of really small diodes all under one phosphor layer (COB literally means Chip On Board). All these little chips are set up in parallel strings. Depending on how they're wired, different voltages and drive currents are needed.
There are 3 versions you'll commonly see. They are B, C and D. This is important because you need to make sure your constant current driver can handle the voltage draw.
The 'D' version is technically the lowest power version. It runs at a Forward Voltage (Fv) of 38.7v at 2100ma - this is the "typical" (manufacturer suggested) drive current. This means each COB uses just over 80w
The B version runs at 52v at a drive current of 1800ma (typically under-driven at 1400ma or 1750ma). At 1400ma it pulls about 72 watts and at 1750ma it pulls approximately 91 watts. This is more or less the most common version.
The C version uses 69v at 1710ma. The more typical drive current is 1400ma. At 1400ma this little guy pulls about 96w and is the most powerful Vero. You can drive it at 1750ma too, but it's not generally suggested. This tends to be the most expensive version.
This doesn't touch on the issues of electrical efficiency (lower current = more light per watt used) out the thermal efficiency (cooler chips = more light)
As a perspective check, I run 4 Vero 29 Gen7 3500k 'D'; 2 per driver on a Meanwell HLG-240-C2100B. That driver is rated to handle up to 3 of the 'D' version.
This gives me 325w of COB and more or less maxes out my 2x4x5 tent - meaning adding more LEDs will not realistically boost what I can produce without further supplementing CO2.
You're dealing with 1sq/ft less than me, so 4 Vero 29 LEDs will be enough for that space, regardless of the version. That is, unless you want to start adding CO2.
Thanks I'm inresting in your findings.interesting ill try to get my hands on some and test in the sphere
Since the flux remains the same I'm not sure the chips are revised. It's possible the electrical characteristics as just documented more precisely. I sent an email to Bridgelux. They don't have the best record getting back in touch via email but we'll see if they respond.interesting ill try to get my hands on some and test in the sphere
Depending on the version, you are also under-driving them, which means that you're getting slightly more light for every watt.My driver is 1400ma 4 cobs would put me at 200watts. I'm only one sq foot less than you but 125watts less than your set up. Doesn't seem like enough ?
i dont think the big companies nerd out like we do on such thingsSince the flux remains the same I'm not sure the chips are revised. It's possible the electrical characteristics as just documented more precisely. I sent an email to Bridgelux. They don't have the best record getting back in touch via email but we'll see if they respond.