Mike Cap
Active Member
With that driver you can only drive 1 36v COB correct? or are you running the COB parallel?
Matching Drivers and COBs
- Thread starter SupraSPL
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Gromax 3590B
Active Member
Th
I am going to use that driver for 1 COB at 35V and 1.12A (and as low as i can get with that dimming) . I could run 2 COBs at 35V and .56A but that is only 20 watts per COB.
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bassman999
Well-Known Member
the more cobs you run (parallel) the lower current to each one.
]I run 6 cobs each as I like higher efficiency
bassman999
Well-Known Member
If you mean the HLG-240H-42b that isnt meant for a single cob!
That would be over 5 amps and burn it up in 5 seconds
That would be well over 200 watts
Has anyone found the best current for getting cobs closer to canop
I am using a 0-10volt dimmer,if I use it,but hlg says to adjust low and high end points so that high is less than 10 and low is greater than one to protect cobs from being under or over drive
HLG recommends setting low and high end points of dimmer to less than 10volts on high side and greater than one volt on low side if using 0-10volts dimmer.
My dimmer doesn't have adjustable end points so I may not use dimmer.I measured output of dimming feed and it may not be safe to use above 10 or below 1 volt?
I'm checking with maker of dimmer to see if end points are adjustable but I didn't see any adjustments.
thanks,
I am using a 0-10volt dimmer,if I use it,but hlg says to adjust low and high end points so that high is less than 10 and low is greater than one to protect cobs from being under or over drive
thanks,
HLG recommends setting low and high end points of dimmer to less than 10volts on high side and greater than one volt on low side if using 0-10volts dimmer.
My dimmer doesn't have adjustable end points so I may not use dimmer.I measured output of dimming feed and it may not be safe to use above 10 or below 1 volt?
I'm checking with maker of dimmer to see if end points are adjustable but I didn't see any adjustments.
Mike Cap
Active Member
do you think parallel is the better way to go? I seen a video where growmau5 said it was wise to use a resistor if your going parallel . I'm just curious cause i'm ready to buy some parts and want to get as much feedback as possible. and BTW I heard back from Luminus and the CXM-32 Gen3 is released, and I also found holders for them.
bassman999
Well-Known Member
Best current for cose to canopy depends on strain and plant age, but below 500ma I can get 6" away if needed.
I dont have special dimmer and running them a yr and dim them all the time to min and mx when feeding etc...and no issues
bassman999
Well-Known Member
Parallel is my favorite because you can add the amount of cobs you want (within reason) and the driver still works fine.
I dont do any balancing with mine and a yr later no issues yet, but if I knew how to do it I probably would just to make all cobs push the same for better efficiency, but that would be maybe 1-2% max difference I think.
Where do you see them listed?
I never heard back for my vendor.
Tomula
Active Member
Well you can put one CLU058 1825 on that. You better cool that chip down with water or some beefy CPU cooler though. It can be done but it is not efficient nor practical. Better off with more chips two or three. Or dim the driver down some. I want to put 2 of them on the HLG-150H-54B. That will work alright, wouldn't it? Cheers!
bassman999
Well-Known Member
75W each for the 1825 is fine no worries, they are rates with over 117 watts as the (typical)
Gromax 3590B
Active Member
No i am going to use the HLG-40H-36b for one cob. That is max 36V 40W.
Gromax 3590B
Active Member
The HLG driver data sheets are very clear about voltage and ampère, constant current or constant voltage.
If i look at the datasheeys for the HLG-40H-36B i see that the ampères are adjustable from 0.67 to 1.12A (for the a model only). If i look further on the datasheet i see dimming properties from 0 to 100%. My intuition tells me that that 0% actually presents that 0.67A. If i don't get the answer to this i will find out myself by buying that driver.
If i look at the datasheeys for the HLG-40H-36B i see that the ampères are adjustable from 0.67 to 1.12A (for the a model only). If i look further on the datasheet i see dimming properties from 0 to 100%. My intuition tells me that that 0% actually presents that 0.67A. If i don't get the answer to this i will find out myself by buying that driver.
GrowinGreenBeans
New Member
So I'm new to the LED building a system thing. So with the chart, you're saying I can run 6 lights efficiently when using six 36V CXB3590 LEDs on a HLG-120H-C700 driver?
bassman999
Well-Known Member
B version dims to 0% Using external dimmer,
B version you gotta buy dimmer
A version dims to 50% using internal pot.
Gromax 3590B
Active Member
With the HLG-240H-42 that would be 240/6=40. 40 watts per cob maximum.
Gromax 3590B
Active Member
That is great. I lost my multimeter and got a buy new one.
I got 5 cxb3590 on a HLG-185H-C1050 constant current model B with a 10K resistor on the dimming leads and my 5 magic lights are very bright at 10% and thus <20 watts if the driver really dims to 10%. If this is true i will replace every (led) light bulb in my house with a underdriven 3590. 1kwh Costs me €0.23 In the Netherlands (the fish are paid hard for)
I am new to COBs and surprised about their brightnes, stunned.....
Damn i need my good old multimeter now...
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bassman999
Well-Known Member
Yeah they can take much more, but I have a small space and want more cobs with less heat
bassman999
Well-Known Member
I have a Killa-watt that plugs inline with driver and tells you about circuit like watts drawn voltage etc...
This is how I know how far dimmed I am.
Keep in mind aftr cobs warm up (5 min) they draw slightly less than when initially turned on. So like 185w draw when turned on might be 180w after 10 minutes.
Gromax 3590B
Active Member
Growing green beans, i search the data right now........
Okay... It is a 150.5 watt 700mA maximum driver.
I assume that a 700mA CXB3590 consumes about 33V+-. so 33*6*0.7 (V*amount off cobs*A) = 138.6 watts.
That looks like a perfect match for that driver. The HLG-120H-C700 is rated/stated as a constant current driver so it is advised to connect that 6 COBs in series.
Just my 2 cents. I am new to this amazing COBs and i did not finish school or how that Antiqua thing is called in english language.
I am aware of the temperature/voltage differences. This are raw estimates.
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bassman999
Well-Known Member
Thats a perfect fit as the CXB3590 draws around 23w at 33V when pushed with 700ma
