wiring cobs parallel

OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
voon said:
you've got in terms of confusion .. a lot of things wrong .. for Constant current driver is possible serial wiring.. You have a constant voltage driver not the constant current driver .. You may use parallel wiring with them .. each COB will be a pull for example 40V .. volts value with a number of COB not count, but total current value on driver division number of COB .. voltage is the same for every COB .. You must setting on your driver on the potentiometer Vo Adj Max 40V or calculate value for volt on table for current 0,866mA .. for 3x Nichia = 2.5A / 3 = Each COB = 0.866 mA @ max40V = 33W Each
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i know... i was referring to "super man team"..when i mentioned constant voltage and constant current

i will leave everything the way it is..because its working..

i got the 48 v drivers because they were less than 1/2 price

the other part yes i am confused as in not enough knowledge..thanks!

****so does that mean if i adjusted the voltatg down on the potentiometer..i could hook up 4 at less than 40 v.. and thus have lower wattage and efficiency?
 
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OLD MOTHER SATIVA

OLD MOTHER SATIVA

Well-Known Member
quote:

Also, all manufacturers recommend against parallel wiring of COBs. However running them at those low currents you shouldnt experience any problems associated with parallel wiring.


>yes thanks...i did do the math on that..nichias can take a fair bit of electricty..i am running them very light..

i would prob need another style of driver for series..

anyway they work well..103w for the three of em..more or less[killawatt prob not accurate]
 
V

voon

Well-Known Member
Shugglet said:
It is a combination of constant current / constant voltage. From meanwells site :
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So now I'm confused .. I understand that it is possible the driver to use both CV and CC .. has potentiometers for both control .. but only when used in low-power LEDs and low-performance systems .. this engagement the driver will not be possible to connect serial COB which each COB pull 33-40V and driver gives max 43-53V.. from that my only option is based parallely wiring system for COB
 
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Airwalker16

Airwalker16

Well-Known Member
voon said:
so now I'm confused .. I understand that it is possible the driver to use both CV and CC .. has potentiometers for both control .. but only when used in low-power LEDs and low-performance systems .. this engagement the driver will not be possible to connect serial COB which each COB pull 33-40V and driver gives max 43-53V.. from that my only option is based parallely wiring system for COB
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Ya what happens when you series wire say 4 Cxb3590's to an hlg-240h-36a?
 
V

voon

Well-Known Member
OLD MOTHER SATIVA said:
..i could hook up 4 at less than 40 v.. and thus have lower wattage and efficiency?
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Yes .. it is possible for them .. you may control Vo adjust for cca 37V and each COB will be pull cca 37V@625mA=cca 23W each and more effeciency .. parallely wiring no limits number COB for connect them to up driver wattage limit
 
Airwalker16

Airwalker16

Well-Known Member
voon said:
Yes .. it is possible for them .. you may control Vo adjust for cca 37V and each COB will be pull cca 37V@625mA=cca 23W each and more effeciency .. parallely wiring no limits number COB for connect them to up driver wattage limit
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Ya they'd just be very very dim up with too many cobs on one driver.
 
CannaBruh

CannaBruh

Well-Known Member
Airwalker16 said:
Im still waiting for someone to just PLEASE @Growmau5 make a video on the workings of these drivers and using them for COBs. Because I get it to a point, but things are still a little bit foggy on some of the more in depth aspects of how they work.
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What are you needing to know about the inner workings of the drivers?
 
Growmau5

Growmau5

Well-Known Member
@Airwalker16 funny timing. Im actually working on a video discussing that topic.
Parallel wiring cobs using:
-fuses
-current limiting resistors
-how to build a current mirror

The premise is: "someone" is on a restricted budget. They need light now, but dont want to piss their limited funds away on some china shit. So they buy a heatsink that can handle some serious juice, one COB, and one driver.
As their budget increases, or they save up, they add a second cob & heatsink for the same dissipation, but driving up efficiency, then a 3rd and so on.
Im basing it off of the ICEled cooler and this driver (for demonstration purposes): I guess ill have to see if the iceled ULTRA can handle a 3590@ 2.3 amps, lol. :fire:

Parallel wiring video driver 1.jpg
 
Rocket Soul

Rocket Soul

Well-Known Member
Growmau5 said:
@Airwalker16 funny timing. Im actually working on a video discussing that topic.
Parallel wiring cobs using:
-fuses
-current limiting resistors
-how to build a current mirror

The premise is: "someone" is on a restricted budget. They need light now, but dont want to piss their limited funds away on some china shit. So they buy a heatsink that can handle some serious juice, one COB, and one driver.
As their budget increases, or they save up, they add a second cob & heatsink for the same dissipation, but driving up efficiency, then a 3rd and so on.
Im basing it off of the ICEled cooler and this driver (for demonstration purposes): I guess ill have to see if the iceled ULTRA can handle a 3590@ 2.3 amps, lol. :fire:

View attachment 3787184
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Yep, this is exactly what ive been thinking about lately but from a different angle. Say you want the possibility to adjust spectrum a little bit in ur grow, for vegging, preflower stretch (both higher k, bluer lights) or full flowering ( low k, high cri light) or bluer for finishing to frost up the bud while still maintaining a base of lets say 3500 k. With you standard series connected setup this is a drag, buy all new lights driver and heatsink, and do it twice for blue and red. With a paralell connected setup you could do this real easy: lets say 3 of whatever 3500ish cob on a 200w driver in paralell doing 65ish watts each. Apart from ur standard cobs u get 1 fairly big big heatsink, like kingbrites 180mm, and mount 2 cobs to it, one with a very red spectrum one with blue spectrum and connect both in separate paralell with the same driver and with a simple light switch on each cob. U wanna adjust spectrum u just flick the switch on one of ur auxilary cobs and the cobs(3+1) run at 50w each, gaining a bit light even. Dunno if this makes sense cuz im bad at explaining but i will probably try this. The spread wont be great but you can always use diffusers to get ur added color spread around more. Does this make sense to anyone?
 
weed-whacker

weed-whacker

Well-Known Member
CobKits said:
no they make both the constant low voltage (ie hlg-185h-36b) and the constant-current high voltage versions (ie hlg-185h-c1400a) in both A and B versions.

where "A" version is most useful is the ability to reach to a higher range. for examples citis are in the 50-53V range which you can hit with a 48A but not a 48B. same if youre trying to run say a cxb3070 at high currents over 36V
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this is perfect information thanks

so when the voltage goes up(over the 48v for example) the current doesn't drop? is this for all models(185 120 320 240 ect)?
 
CobKits

CobKits

Well-Known Member
i literally tested one of these tonight. the voltage on an hlg320h-320-36b holds tight at 36.1 and reduces current to the cobs. it works but poor driver utility
 
Airwalker16

Airwalker16

Well-Known Member
Growmau5 said:
@Airwalker16 funny timing. Im actually working on a video discussing that topic.
Parallel wiring cobs using:
-fuses
-current limiting resistors
-how to build a current mirror

The premise is: "someone" is on a restricted budget. They need light now, but dont want to piss their limited funds away on some china shit. So they buy a heatsink that can handle some serious juice, one COB, and one driver.
As their budget increases, or they save up, they add a second cob & heatsink for the same dissipation, but driving up efficiency, then a 3rd and so on.
Im basing it off of the ICEled cooler and this driver (for demonstration purposes): I guess ill have to see if the iceled ULTRA can handle a 3590@ 2.3 amps, lol. :fire:

View attachment 3787184
Click to expand...
I am looking forward to this video very much. Also, I've been watching the round table every week brutha! Gonna try to be there for it tomorrow though.
 
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