Help with Vero 13 build

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Phillies1990502

New Member
Can't seem to get much help posting in existing threads so I guess I'll make a new one. I'm trying to decide on COBs for retrofitting an old LED fixture. It as 4 drivers 55-100v @500-550mA. I have two of these and already did one using the 6th gen Vero 13s 3 cobs per driver.

Now for the second one I'm wondering if I should use 7th gen and if I even can. The square COBs test current is 630mA and 33.9V if I run it at 550mA does that lower the voltage too?

Basically I have 100v at 550mA can I run 3 7th gen Vero 13s or not? Thanks




http://www.digikey.com/product-detail/en/bridgelux/BXRC-30E2000-B-73/976-1400-ND/6152410

http://www.digikey.com/product-detail/en/bridgelux/BXRE-30E2000-C-73/976-1379-ND/6152389
 
Abiqua

Abiqua

Well-Known Member
Running lower current [amperage] only lessens overall wattage; vF is already rising or falling in tiny amounts due to the temp etc. ie never static or rarely.

Volts [multiplied by] Amps = watts

If you are running 3 gen 6's currently, I can see no reason why not 3x Gen 7's, unless they have a B,C,D voltage selection like the 29's......if anything the voltage is a tad less in the Gen 7's at the comparable current of the Gen6's....

I run even older Vero 13 2700K's and have three running from a supposed 75v 300ma Driver...so you might almost get away with running 4x on 100 volts...Free Voltage!
[what i mean, is run three and then some mono's on the remaining 18 volts or so that would almost equal that 4th diode :leaf:]
:peace:
 
P

Phillies1990502

New Member
Abiqua said:
Running lower current [amperage] only lessens overall wattage; vF is already rising or falling in tiny amounts due to the temp etc. ie never static or rarely.

Volts [multiplied by] Amps = watts

If you are running 3 gen 6's currently, I can see no reason why not 3x Gen 7's, unless they have a B,C,D voltage selection like the 29's......if anything the voltage is a tad less in the Gen 7's at the comparable current of the Gen6's....

I run even older Vero 13 2700K's and have three running from a supposed 75v 300ma Driver...so you might almost get away with running 4x on 100 volts...Free Voltage!
[what i mean, is run three and then some mono's on the remaining 18 volts or so that would almost equal that 4th diode :leaf:]
:peace:
Click to expand...
Okay thanks for the help. On Digikey it shows the 6th gen use 31volts the 7th gen says 34 volts. This is where I'm stuck. My understanding was even though it's 102 volts today it's not a big deal to go a tiny bit over. I just don't want to order them and find out I can't run three per driver. I attached a pic of what I'm doing that is the first one. I broke 2 drivers putting it together so I now have 6 drivers for the two fixtures. I'll be doing 3 drivers/9 cobs per fixture. Which I think will put me around 270watts combined.
 

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