First build! Rapid LED 3 COB Vero build and review

[Jimmyclone42]

It doesn't work like that. Those chips are the same as mine 36-37v is all they will pull, your amperage will dictate your wattage. I run hlg240-1750.. 1750*37..
If your is 1400ma its 36.4*1400..
Veros come in d, b, c versions..
D=36v
B=50v
C=72v
Voltage is determined by the chip, you choose the amperage by your driver

 

[Cletus clem]

It dosnt work like that dude. Current determines intensity. They are 36 volt cobs. At 1400 they are only drawing 37.2x1400. 52 watts per cob. 156 watts. On that driver you could add one more and get 208 at that current but that is all. To calculate wattage, use the cobs voltage forward at the chosen drive current x the chosen drive current. The max voltage only comes into play in certain configurations where the cobs your using x the drive current chosen=the wattage capacity of the drive but there is ultimately not enough voltage in the driver to reach forward voltage across all cobs. In other words, seems like it should work, close but no cigar.

 

[Cletus clem]

It doesn't work like that. Those chips are the same as mine 36-37v is all they will pull, your amperage will dictate your wattage. I run hlg240-1750.. 1750*37..
If your is 1400ma its 36.4*1400..
Veros come in d, b, c versions..
D=36v
B=50v
C=72v
Voltage is determined by the chip, you choose the amperage by your driver

Didnt know they came in 50. Cool beanz!

 

[Nick42]

It doesn't work like that. Those chips are the same as mine 36-37v is all they will pull, your amperage will dictate your wattage. I run hlg240-1750.. 1750*37..
If your is 1400ma its 36.4*1400..
Veros come in d, b, c versions..
D=36v
B=50v
C=72v
Voltage is determined by the chip, you choose the amperage by your driver

Ok so by what u guys are saying im losing 118 watts on the driver!? I have to be if im pulling 265 from the wall. If thats the case how are leds any more efficient than hids? Just bc they dont get as hot? So in order to get 600watts i would have to be pulling 1200watts from the wall?

 

[Nick42]

It dosnt work like that dude. Current determines intensity. They are 36 volt cobs. At 1400 they are only drawing 37.2x1400. 52 watts per cob. 156 watts. On that driver you could add one more and get 208 at that current but that is all. To calculate wattage, use the cobs voltage forward at the chosen drive current x the chosen drive current. The max voltage only comes into play in certain configurations where the cobs your using x the drive current chosen=the wattage capacity of the drive but there is ultimately not enough voltage in the driver to reach forward voltage across all cobs. In other words, seems like it should work, close but no cigar.

this guy says it actually comes out to like 500watts. He added me on Instagram and holy shit he's doin some pretty slick builds

 

[Nick42]

It doesn't work like that. Those chips are the same as mine 36-37v is all they will pull, your amperage will dictate your wattage. I run hlg240-1750.. 1750*37..
If your is 1400ma its 36.4*1400..
Veros come in d, b, c versions..
D=36v
B=50v
C=72v
Voltage is determined by the chip, you choose the amperage by your driver

They dont pull voltage nothing pulls voltage voltage pushes. Voltage is set by the driver. The drivers im using are 240/14

It doesn't work like that. Those chips are the same as mine 36-37v is all they will pull, your amperage will dictate your wattage. I run hlg240-1750.. 1750*37..
If your is 1400ma its 36.4*1400..
Veros come in d, b, c versions..
D=36v
B=50v
C=72v
Voltage is determined by the chip, you choose the amperage by your driver

 

[Nick42]

It doesn't work like that. Those chips are the same as mine 36-37v is all they will pull, your amperage will dictate your wattage. I run hlg240-1750.. 1750*37..
If your is 1400ma its 36.4*1400..
Veros come in d, b, c versions..
D=36v
B=50v
C=72v
Voltage is determined by the chip, you choose the amperage by your driver

Voltage pushes the current. The voltage you are referring to is the minimum voltage needed at a specific test current in order for the cob to turn on. These are constant current drivers @1400ma the vero29gen7d needs 37.2volts I think to turn on. Doesent mean you can't crank the voltage up. Check out some of growmau5s YouTube vids.

 

[Nick42]

It dosnt work like that dude. Current determines intensity. They are 36 volt cobs. At 1400 they are only drawing 37.2x1400. 52 watts per cob. 156 watts. On that driver you could add one more and get 208 at that current but that is all. To calculate wattage, use the cobs voltage forward at the chosen drive current x the chosen drive current. The max voltage only comes into play in certain configurations where the cobs your using x the drive current chosen=the wattage capacity of the drive but there is ultimately not enough voltage in the driver to reach forward voltage across all cobs. In other words, seems like it should work, close but no cigar.

I'm not understanding ur explanation by growmau5s explanation the voltage ur referring to is the minimum voltage needed at that specific test current. The drivers I'm using are constant current drivers. The voltage out of the driver is dependent on what u set it at. The max voltage these drivers put out is 179. So if you divide that by 3 that's how much voltage is across each cob at max voltage out of the driver

 

[Jimmyclone42]

Voltage pushes the current. The voltage you are referring to is the minimum voltage needed at a specific test current in order for the cob to turn on. These are constant current drivers @1400ma the vero29gen7d needs 37.2volts I think to turn on. Doesent mean you can't crank the voltage up. Check out some of growmau5s YouTube vids.

You need to do some more homework bud.. Voltage does not push current.. Current is the pushing force in any electrical circuit. The voltage drop accross any device is determined by the current being fed through the circuit.
Veros also do not need 37.2v to strike.
They can light at 35v or less.. Voltage and current are directly related, and change as one moves up or down..
You might want to check bridgelux data sheet..

3500/80 d chips at the bottom..
I believe sixstring said you had 500w because u said u had 2x 260w kits.. Sixstring is a good dude who knows his shit.

All this stuff is pretty basic to diy leds..
I suggest u read up some more..

Cletusclem is right, u can add another cob to the driver and get 200w..
Cheers

 

[Jimmyclone42]

At 1400ma you are running 36.2v period..
50w per cob

 

[Nick42]

At 1400ma you are running 36.2v period..
50w per cob

See now I am confused bc I do have a technical degree and I know ohms law front to back. And from what I know as fact is that you are correct v c AND p are all directly related. But Voltage is not dependent on the component. its dependent On what u set it at. If i have a 12v battery and I hook it up to anything it has 12v acrossed it no matter what it is. The driver is basically a battery. It puts out anywhere from 0-179dc volts depending on what u set it at. I did look at bridgelux spec sheet and I can't see where nominal voltage is equal to max forward voltage that the cob can handle. I'm confused as to how components determine how much voltage comes from any power supply. DC voltage across any circuit is the same no matter what's in the circuit. If it's a series circuit u will have different voltage drops across the components in the circuit but the total voltage across the entire circuit will always be the potential difference (voltage) that you place across the circuit no matter what's in the circuit. Yeah other than how much the cob can handle and how much it needs to turn on I'm still trying to figure out how the cob determines the voltage. Does the cob tell the driver what voltage to put out?

 

[Nick42]

here I thought these were funny you need to go to school and actually learn Electronics Theory instead of putting this information out there if I didn't know any better I would have listened to what you were telling me

 

[Nick42]

Anybody..... anybody....

 

[Nick42]

Listen im new to growing in tents or any sealed spaces where environmental control is needed. not new to electronics. So if you know how to grow ill take your advice. (Albeit with a grain of salt bc u were obviously trying to bs me on the basics of electronics theory.)

 

[Nick42]

heres some more spec sheets for ya

 

[Jimmyclone42]

Current is the flow of electrons..
Voltage is the potential difference between 2 points in a circuit..
In your diagram the ohms or resistance is the object bottle necking the circuit, slowing the current..
Now your correct that voltage "drives" current, but dosent actually push it..
Current flows through a circuit depending on the resistance in the circuit..
E = I x R
You can have voltage without current..

Cobs themselves have a set fv.. Ie.36,50,72v... But the current that is feed to them will change fv slightly...
But this isnt true for all chips.. Cree cxb3590's seem to stay at 36v regardless of the amperage.. Or so people say on here, i run veros as well not crees so i cant say 100%...
I am an electrician by trade... All this was 1st year stuff..
Here is the direct relationship between fv and current through our chips

I do apologize if i came off as an asshole in my earlier post.. I see lots of people building rigs b4 doin their homework... Or just watching a single growmau5 video and thinking there electrical experts..
Here are some of my sour d's almost done..

Cheers

 

[Nick42]

The voltage is the force that pushs the flow of electrons or current. But any way tomatos tomatos. lol your tomatos do look tasty. Looks like the same tent i got. We understand it diferently and i was offended being that my degree is in electronics engineering technology.

 

[Halfandhalf]

This link is from the excel official vero sim http://imgur.com/a/eUHAE
Also included is an email from Mike at rapidled for the 6x20" heatsink/fan. I wanted to run more than 210 watts, I didn't realize the base kit they sell is with the 36v chips but it doesn't matter because max from the 2100a is 36.6v per chip or 77 watts each or 231 watts for 3. Mike said they don't like to run more than 210-220w.

Now my 50v chips at 1.4a run at 49.5v from that sim, about 207.9 watts total for all 3. I have an ac watt meter hooked up to it though and it reads 220 watts. Not sure where that conversion is coming from but maybe that's what your guy is talking about. These are the official numbers and your voltage is determined by current. No one is trying to bs you. Also meanwell 240h has a max output of 250w. http://www.mouser.com/ds/2/260/HLG-240H-C-spec-806189.pdf

 

[Halfandhalf]

What spectrum are you running jimi?

I've been thinking about adding a 3000k-90cri@66.3v,1.4a to my build of 3x3500k-80cri@49.5v,1.4a replacing the middle cob. That would bring me closer to the max for the driver as well as giving me more red in the spectrum. Lumens might not matter but that coincidentally is only 1000 lumens higher with the 66v chip at 90cri and 3000k. Hopefully I don't burn the plants with more intensity in one cob though when they will all be in the same fixture and height.

Also sorry for the hijack

 

[Nick42]

This link is from the excel official vero sim http://imgur.com/a/eUHAE
Also included is an email from Mike at rapidled for the 6x20" heatsink/fan. I wanted to run more than 210 watts, I didn't realize the base kit they sell is with the 36v chips but it doesn't matter because max from the 2100a is 36.6v per chip or 77 watts each or 231 watts for 3. Mike said they don't like to run more than 210-220w.

Now my 50v chips at 1.4a run at 49.5v from that sim, about 207.9 watts total for all 3. I have an ac watt meter hooked up to it though and it reads 220 watts. Not sure where that conversion is coming from but maybe that's what your guy is talking about. These are the official numbers and your voltage is determined by current. No one is trying to bs you. Also meanwell 240h has a max output of 250w. http://www.mouser.com/ds/2/260/HLG-240H-C-spec-806189.pdf

Ok so if the 240h is maxed out at 250watts then that makes sense. Because 250 Watts divided by 1.4 amps equals 178.571 volts that that driver is putting out which jives with what the spec sheet say that it is capable of putting out 178 179 volts the chip doesn't determine the voltage. If I got the dimming leads open on the 240h it's running at 105% that's 179 volts Plus and the size chip doesn't change that.Thats what im getting at. And the 240h is a constant current driver the current doesent change. That whole 179 volts is dropped across whatever chip you hook up to the driver. If you wire multiple chips than that 179 volts is split up amongst those chips accordingly. If I have three cobs in series with 179 volts across that circuit each one of those cobs is going to drop 59.6 volts across it. No I'm not saying that's typical voltage which is what you usually see on the spec sheets I'm not saying that's nominal voltage I'm saying that's the voltage you are putting across that circuit. this is from bridgelux.