DiY LEDs - How to Power Them

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

  1.  
    mahiluana

    mahiluana Well-Known Member

    you can drive 5 x CXBs 3590 without problems @ ~175V / 1400mA / ~180lm/w

    very efficient combination - total 245W = 35W/sqf > enough light.
    if you dimm down to 700mA you can reach up to 220lm/w (depends on bin of your chip)

    watch your heatsink(s) and try to keep it below 40°C
    @ full load you have to sink ~170W heat power
     
  2.  
    rocho

    rocho Active Member

    Hi
    could you explain it betetr, i know it's an old post but I'm just curious.
    Of course you're speaking about a CV driver, sin't it?
    i miss this part " Then keep it like that and connect 2nd cob. Verify current is 2.1+2.1. Use the other current control internal potentiometer to adjust current to control intensity." How could I make this using a single driver to pilot two cobs and driver has only one pot(esternal in this MW-A series)?

    Thank you so much!
     
  3.  
    ganjafather27

    ganjafather27 Well-Known Member

    Hey guys, im wondering if anybody can spread a little knowledge my way.

    I'd like to make a single 36v cob unit. What driver(s) would be the best for a single cob build?
     
  4.  
    tekmunki

    tekmunki Member

    The newer HBG Meanwells would be great for a single cob, you don't really get the flexibility of expanding the system out later like with the HLG's cause the form factor lends itself to being attached to one cob at a time. HBG-100-48A is dimmable up to 2 amps and can put out a forward voltage between 28-48v so they pair nicely with 36v cobs. You can even screw in an eye hook to the top of the driver to hang it. It's not the cheapest option being around $40 but if you're looking for something you can just mount the cob and heatsink to and still look good without wires everywhere it's an option.

    02522-48-07.png
     
    ganjafather27 likes this.
  5.  
    Skiball

    Skiball Member

    I'm surprised more people don't use the rsp models. You can get the 1600 48 for 220$ and it's 93% efficient.
     
  6.  
    FLtoMI

    FLtoMI New Member

    Need your advice on powering the Japanky Quantum Boards 336 from Amazon. Shows 168 Watts but not sure what driver would work best. Any advice would be appreciated...
     
  7.  
    JACQO

    JACQO Well-Known Member

  8.  
    Canadain Closet Gardener

    Canadain Closet Gardener Well-Known Member

    Silly question.
    My driver has two outputs? I'm running strips in parallel.
    20180301_164518.jpg
    Do I power half my strips with one output and the other half with the other?
    Cheers
    CCG
     
  9.  
    GBAUTO

    GBAUTO Well-Known Member

    Looking at Meanwells website, it looks like they do this on the 480W drivers that output under 48V. I think that your driver has two outputs because the current would be more than the single cable could transmit safely. I couldn't find a definitive answer but I'd suspect that the two outputs are just tied together on an output bus from the driver-just connect the strips like you planned.
     
  10.  
    Canadain Closet Gardener

    Canadain Closet Gardener Well-Known Member

    My drivers is going to be outside of my grow area. Does this mean I run 4 wires to my light instead of two?
    Do I plug the two positive together into a wago and two negatives into the other wago?
    Sorry I'm just really confused and I can't find anything on this.
    Cheers
    CCG
     
    mahiluana likes this.
  11.  
    GBAUTO

    GBAUTO Well-Known Member

    What I believe it means is that the two output pairs are connected inside the driver-they have to use two cords because of the current output. A single cord would need to use a higher gauge. Just try to divide the load you expect the driver to see so that each cord has approx. the same current. You could connect the cords together to allow a single pair into the tent-just make sure it's capable of handling the current flow.
     
  12.  
    Canadain Closet Gardener

    Canadain Closet Gardener Well-Known Member

    Thank you I got it working

    20180302_234108.jpg
    Cheers
    CCG
     
  13.  
    GBAUTO

    GBAUTO Well-Known Member

    Now that's a 'wall' of light!
     
  14.  
    justsmokedope

    justsmokedope Well-Known Member

    im just finnishing off my light thats based on the cree hort design but im running at about 950ma only because i have 3 x 36v 2.7a drivers laying arround i mught get some 1050ma drivers in the future though ive added some royal blue xp g3s and some 625/630nm reds in too as i felt that it was too red heavey
     
  15.  
    boilingoil

    boilingoil Well-Known Member

  16.  
    GBAUTO

    GBAUTO Well-Known Member

    I just used a Meanwell APC driver-APC35-700. It should power about 15 of those diodes in series.
     
    boilingoil likes this.
  17.  
    whytewidow

    whytewidow Well-Known Member

    Got my light finished and up and running.

    10 F562b Samsung Strips and 4 custom built red leds. 120 leds per strip. 4 strips. 60 HE red and 60 Deep red diodes. Setup mixed up of every other type. Alternated between the two. To mix the coverage evenly. Dual row. Light is only used for flower. Both run wirelessly with Sonoff wireless network switch. Both channels dimmable. Turned way down for pic. Just barely fit in my 2x4 tent.

    mir_20180314_163619.jpg
     
    boilingoil likes this.
  18.  
    boilingoil

    boilingoil Well-Known Member

    Thanks, but I don't think a 36 watt power supply could run 15-10 watt diodes. I'm not the smartest person when it come to LED's. but basic math tells me they would only be running @ 2.4 watts each max
     
  19.  
    boilingoil

    boilingoil Well-Known Member

    Excellent ! Got a link to your build.
     
  20.  
    PurpleBuz

    PurpleBuz Well-Known Member

    actually it can run more than 15 of the xml2s maybe 17.
     
    boilingoil likes this.

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