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DiY LEDs - How to Power Them

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

  1.  
    CobKits

    CobKits Well-Known Member Rollitup Advertiser

    DA has a the Dali dimming interface i beleive

    ELGs only run efficiently on 240V, are derated for 120V input
     
  2.  
    ThaiBaby1

    ThaiBaby1 Well-Known Member

    Hi @cobby!
    How can I run 24 volt led strips on a 48 volt Meanwell?
     
    Abiqua likes this.
  3.  
    KonopCh

    KonopCh Active Member

    What means that? It's still good for 6x 1212 or I would need something else with that driver?
     
  4.  
    GBAUTO

    GBAUTO Well-Known Member

    What it means is that the driver can only produce ~180 watts when supplied with under 180v A/C. 180w @1.05A=171V forward voltage the driver can supply @120VAC vs [email protected] 220VAC. So the short answer is-it depends. If you have 220AC it will work-if you have 120VAC, it wont.
     
  5.  
    KonopCh

    KonopCh Active Member

    I live in EU, I think we have 230V at wall. Correct?
     
  6.  
    GBAUTO

    GBAUTO Well-Known Member

    As long as the voltage at your wall plug is over 180VAC, then the driver should deliver 240 watts.
     
  7.  
    Humanrob

    Humanrob Well-Known Member

    There is a lot I don't know, I could use some clarification with basic driver questions.

    It appears some drivers run constant watts(?) no matter how many cobs are attached to them (I was told that my HLG-120H-C1400 would run either 2, 3, or 4 (cxb) cobs -- but regardless of the number attached the cobs would always run @ 50w (with varying degrees of efficiency from the driver) ). Other drivers run at a flat output watt rate, and that total number is divided by the number of cobs (HLG-120H-48A, would run 2 (50v) cobs at 75w (+/-) or 3 @ 50w (+/-) ).

    What I want to confirm is the former -- that an HLG-120H-C1400 always puts out a constant level (and yes, I am clueless about amps/watts/volts) of energy and adjust 'itself' to do so with various amounts of demand downstream?

    If that's true, it would be a better candidate for running in parallel with several cobs that each had an inline on/off toggle switch, and it would be OK/safe to run some or all of the cobs connected to it depending on the need?
     
  8.  
    G84

    G84 Active Member

    I am about to build some fixtures for a friend who did not yet decided grow space.
    My plan is to build discrete light fixture of 150watt for 50cmx50cm, that he could scale up according ti his space.
    My question is....how to daisy chain light among them?
     
    Abiqua likes this.
  9.  
    Abiqua

    Abiqua Well-Known Member

    wire two in series for 48v...then if using multiple strings,wire all the positive leads together and all the negative leads together in parallel to draw the proper current.
    In parallel, divide all strings by total amperage to calculate what each string will draw....cheers
     
  10.  
    OLD MOTHER SATIVA

    OLD MOTHER SATIVA Well-Known Member

    retrofitting blackstar 240 burned out board with vero 18's

    hooked 3 vero 18's on each of the two of the drivers 80-130Vf /510 ma-in Parallel***

    plugged it in - pulses like a slow strobe light

    should i have hooked them up series ?
     
    Last edited: Apr 5, 2017
  11.  
    CobKits

    CobKits Well-Known Member Rollitup Advertiser

    why parallel? those arent 80V cobs. series should work fine
     
  12.  
    OLD MOTHER SATIVA

    OLD MOTHER SATIVA Well-Known Member

    i was not thinking and have hooked every build i have done ,parallel...[those seniors]


    thankyou
     
    Last edited: Apr 6, 2017
    sanjuan and Abiqua like this.
  13.  
    RandomHero8913

    RandomHero8913 Well-Known Member

    Hey guys, I have 9 vero18's that are running in sets of three, each set has its own 560ma driver that isn't dimmable. I'm thinking about picking up a Hlg-185H-36a to run these but I'm unsure about one thing. On the spec sheet it shows the Constant Current Region between 18~36v and it has an adjustable voltage of 33~40v. Now if I'm running these at the lowest end of the Current 2.6a spread over 9 cobs its 290ma and will be under 33v.

    Will the driver pick the correct voltage to run at if my running voltage is under the self-adjustment threshold of 33v?

    Thanks
     
    Abiqua likes this.
  14.  
    OLD MOTHER SATIVA

    OLD MOTHER SATIVA Well-Known Member

    RandomHero..what a coincidence!..three for each

    two drivers... 6 vero 18's


    i just hooked three vero 18's in series to each 80-130Vf /510 ma driver and it works!

    the two drivers and 6 cobs are only drawing 106w total at the wall

    i wonder if there is any way to get more out those two drivers with vero 18's?
     
    RandomHero8913 and Abiqua like this.
  15.  
    Abiqua

    Abiqua Well-Known Member

    it will "settle" on a voltage from the current it draws....and may draw up to the 33v for instance if ambient temp rises....a little testing is probably in order to see what the vF settles to after warming up aka volt droop
     
  16.  
    Abiqua

    Abiqua Well-Known Member

    adding some monos isnt a terrible idea although you may be able to squeeze a 4th vero onto your strings :peace:
     
    OLD MOTHER SATIVA likes this.
  17.  
    Abiqua

    Abiqua Well-Known Member

    will one driver power one unit or will a single driver power multiple units?
     
    G84 likes this.
  18.  
    RandomHero8913

    RandomHero8913 Well-Known Member


    Thanks. I have them all running in series now with the 560ma constant current drivers i goat fucked from a roleadro light. My area of confusion is with these parts:
    [​IMG]
     
  19.  
    OLD MOTHER SATIVA

    OLD MOTHER SATIVA Well-Known Member

    Rnadom Sir,

    i am no real person to ask but the voltages match vero18's range and the HLG will "self adjust"
     
  20.  
    zuzuj

    zuzuj New Member

    i got 185h c1400b driver ..what i need to make him dimmable ?
     
    Last edited: Apr 10, 2017

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