DiY LEDs - How to Power Them

Discussion in 'LED and other Lighting' started by SupraSPL, Feb 22, 2014.


    Tomula Active Member

    Hello I want to build COB light and I want to use HLG-150H-54A for 2x CLU058 1825. Is that all right? Thank you for insights guys. Happy growing! :leaf:
    Last edited: Dec 9, 2016

    lilsativa Member

    need advice.
    if hlg-185h-1050 has 190 output voltage it means I can run 5 clu048-1212 right?
    and if yes which is better options 4 clu048-1212 at 1400mA or 5 at 1400ma?

    and why should I choose 3k version over 4k?

    as I understand it according to this chart 4k will also work for veg and almost same for flowering

    JDMase Well-Known Member

    About the 1212's at 4k I read that someone here uses them as they, as you said, have similar amounts of red in but more blue?
    The Dawg

    The Dawg Well-Known Member

    Ok With The 1400mA Driver You Can Run 5 1212's At 48ish Watts Per Cob. With The 1750mA Driver You can Run 4 1212's At 60ish Watts With An HLG-240-1750. I Would Also Suggest The 4000k @ 90 CRI, That's My Next Setup. I Run The 4000k In The Vero29 Series And I Love It :peace:

    verticalgrow Well-Known Member

    g'day Dawg,
    i would like to see that :clap:
    Will you be doing a journal:confused:
    sixstring2112 and The Dawg like this.
    The Dawg

    The Dawg Well-Known Member

    Yes I'm In The Process Of Building My Light. Which Is The Citi 1212 4000k 90 CRI I Will Be Using the HLG-240-1750 :hump:
    sixstring2112 and verticalgrow like this.
    Bob John Smith

    Bob John Smith New Member

    I just want to check if the HLG-185H-C1050B can power 4 x CLU048 1818C4 303M2K1?

    If not what is a driver that would work?
    - I've got 12 x 1818's so was thinking 3 strings of 4 LED's.


    lilsativa Member

    probably not, as 4 CLU048 1818C4 needs more than 200V and HLG-185H-C1050B can output only 190V


    lilsativa Member

    thanks for advice.

    dr.medecine Well-Known Member

    Hi guys, perhaps a silly question but so slow and hard to understand, I have the HLG-120H-48A and I just have a hard time understanding functionality???

    It´s to power 2x CLU048 1818 but never used a driver that can do CV and CC, if I understood it correctly it should choose at first time it start up and driving 2x 1818 in parallel it should go into CC mode I suppose.

    Mean well US was the only one to get back to my mails so far, great guy but he said the driver is borderline for my Citizen chips and talked about the first start up but then I loose him, I guess what I want to know is if the driver is started in CC mode is that forever or is there a way to reset it later?

    I find it hard to find short, precise easy to understand information about these drivers, regarding the standard CC drivers it is easier to understand and info everywhere and pdf is not exactly a handbook (for noobs) either.
    Just looking to get going but think better to ask first than potentially sorry later?
    Tomula likes this.

    frica Well-Known Member

    What drivers are the best $/watt wise?

    I'm trying to come up with builds that have roughly the same efficiency and price as a 1000watt Gavita. (or better efficiency/same price)

    The biggest cost isn't the LED.
    It's the LED driver that actually takes up the most amount of money.
    With high power COBs, cooling also becomes expensive.

    JayDee500 New Member

    x2 great forum and members Supra is a Stud! I will post my 1st DIY Light, I copied the canopy 10 light spread set up with 10 cobs-1212 3500k Citizen 36volt runs passive up to 1050ma and I add .02 amp PC 90mm case fans at 1400ma, It is a sexy Light imo..
    None of this would of been possible, if it wasn't for Members like Supra, Growmau, several other Rollitup members and Staff thank you
    Last edited: Dec 26, 2016

    OLD MOTHER SATIVA Well-Known Member

    "first time it start up and driving 2x 1818 in parallel it should go into CC mode I suppose."

    >mine does..

    BornGreen1987 Well-Known Member

    Hi Ladies and Gents,

    Got 5 3500K and 3 6500K CXB3590s running at 1400 mA. Trying to get some red/deep red in the spectrum to support flowering. I know 2700ks run at a lower efficiency but can't find the stats. Was thinking of getting 4 of them at 90 CRI, BB bin. Would like to run them at the highest amperage possible while not dipping below 45% efficiency. Plan to mount each of them on their own individual heatsinks and will choose a size larger than necessary to decrease the temperature as well as use some active cooling to boost efficiency.

    Trying to get the best mix of efficiency, lumen output, as well as the almighty 650-730nm spectrum. I'm thinking long term and want to build this array for many years of growing so quality of parts is paramount. Is there another option I should be considering? Would 3Ks be the better option? I'm probably covering most of that spectrum with the 3500Ks but want some real nugs.

    Feedback much appreciated.

    pop22 Well-Known Member

    the 1212 are 36v nominal, the 1818 is 50v. You can't mix them on a driver


    pop22 Well-Known Member

    No it won't work for 4 cobs. You need to download data sheets for cobs and drivers you arte considering, thats how to make a good choice. An HLG240-C1050b will work.

    here's a screenshot from the data sheet for the HLG240H series. You'll quickly see what will work for you and what won't. All distributors usually have a link to download these, right on the info page.

    Screenshot at 2016-12-28 16-57-16.png

    sixstring2112 likes this.

    Jiddlez New Member

    Thanks for your reply. So I need to keep with same COB on a single driver and just get more drivers if I want to run different ones because you can't mix voltages.

    Due to my poor planning, is there any harm only using up around 200v from a hlg240-1050b?
    pop22 likes this.

    pop22 Well-Known Member

    Should be fine, no harm in running at less than max, better for the life of the driver anyway to keep below max output.

    Tomula likes this.

    mufafa New Member

    Would running 8x Vero 29s via 2x HLG 240H-C1400 (+dimming) be too much for 2x4? 4x Vero's per 240H-C1400 would give me 52w per cob at max. Fv @1400ma is 37.2v so 1.4x that 52.1w. And of course I do plan to dim between ~1050 - 1400ma as needed so a range of ~38-52w per cob. Is my math correct on this? Made the mistake of asking elsewhere and now I'm getting many different answers but this seems to be the right place to get a definitive one. :bigjoint:

    Looking to replace the 400W HPS I have with COBs to give me super even spread over my area.

    I'm trying to find a good compromise between canopy penetration and spread especially since I don't have much height available. My HPS stays 12-14" from canopy with no heat issues but I'm worried COBs can't be that close. Open to suggestions!

    Colombo77 Member

    After reading like a maniac for a week I think I am ready to start ordering and begin construction before I get too confident I figured I would see if anyone had time to review my plan and offer suggestions. I plan to wire the cobs in series and to use passive heat sinks. I would like to just buy a dimming driver with built in dimming but I feel then the dimming function is up on top of the light out of reach or inconvenient at least. So I am thinking about buying driver with the 0-10V leads for dimming and wiring them to a regular dimming switch from home depot with the ability to cut the power at the switch as well by routing the line voltage through the switch as well, is this sensible?. If I mount the switch on the front will this throw the light off balance? Should I buy lenses of some type? I plan to get the cobs, heat sinks driver etc from Kingbrite. Can I buy some type of 120V plug for the light with built in protection? GFCI and circuit protection? I plan I using all wago lever connectors, zero soldering and wondered if I could protect the connections by heat shrink wrapping the wagos or the junction box I plan to put them in?

    My goal a light that is safe, easy to control, solderless, and one that can veg and flower a 3X2 or 4x2. If I missed some place that would tell me all of this information just let me know :-)

    4 LED COB VERO SE 3500K ROUND w 4 Kingbrite pre drilled heat sink 100W

    2100ma 34.8v(min) 37.6v(typ) 40.4v(max)

    1 Mean well 320W Constant Current Mode LED Driver HLG-320H-C
    2100ma, 319.2W, 76-152V
    Tomula likes this.

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