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freemanjack
Last Activity:
Dec 16, 2017 at 3:00 AM
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Sometimes I do things

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freemanjack

Well-Known Member, from I appear to live 'here'

Let there be light and let that light be LED's! Oct 12, 2016

freemanjack was last seen:
Dec 16, 2017 at 3:00 AM
    1.  
      sammie786
      sammie786
      Hey bro, I seen you in a thread about grounding a frame and UK. So I was do you ground the frame should I do it? I wanna be safe.
    2.  
      Belfasta
      Belfasta
      Thanks again Freeman, i have seen a few of your vids and enjoyed. Will watch this one.
      Belfasta
      1. freemanjack likes this.
    3.  
      Belfasta
      Belfasta
      Thanks for advice Freeman. So it would still a reasonable idea to run the vero 29's in parallel with that driver?
      Belfasta
      1. freemanjack
        freemanjack
        entirely, parallel divides the amperage, series divides the voltage so to drive 4 cob's in series requires 4 x the single cob volts, 4 in parallel 4 x the single cob amps I cover this in my vid; https://youtu.be/ezAfL90Z9UY you can see the size of those vero 29's too!
        Dec 8, 2016
    4.  
      Belfasta
      Belfasta
      Hi Freemanjack. Thanks for getting back to me. I am not great at using new tech and I'm working on a tablet here and can't cut and paste.
      I hope to use:
      Bridgelux v22 array bxre-30e6500-c-73 3000k square x2
      Bridgelux v22 array brxe-40e6500-c-73 4000k square x2
      Meanwell hlg-240h-48a driver
      Arctic Alpine cpu cooler 11plus x4
      All mounted in 40x40cm aluminium angle framework
      To be hung in a 80x80x160cm tent.
      La belfasta
      1. freemanjack
        freemanjack
        Ok, there's a lot here to cover, tricky here with a 400 character limit on each post. I'll do my best, those vero 22's would be better being vero 29's, no need for cob holders and better spec'd, that driver can only manage 48v so will not drive 52v cobs to full drive current.
        Dec 8, 2016
      2. freemanjack
        freemanjack
        I would stick with that driver choice but go with the 36v vero 29's, the additional voltage will not trouble 29's at rated wattage and with that driver you would be slightly underdriving 29's giving you better thermal output and better lum/w efficiency. As to your choice of heatsink/fan, it may be ideal or if a little undercooled you can always swap the stock fan for a high cfm replacement.
        Dec 8, 2016
    5.  
      Belfasta
      Belfasta
      Hi freemanjack,
      Nice to know another UK citizen on this forum.
      I have a question for you if you dont mind.
      I am building a lighting rig using 4x bridgelux v22's 3k and 4k, a meanwell hgl 240h 48a and 4x arctic 11 cpu's for coolers.
      Will it be ok to run driver at full blast to give me about 52v and about 1.25a to each cob in parallel?
      Thanks in advance
      La belfasta
      1. Olive Drab Green
        Olive Drab Green
        7th Gen Bridgelux Vero29Cs. 1400-1670mA per emitter. 3500k/80 or 90 CRI.
        Dec 7, 2016
      2. freemanjack
        freemanjack
        Hey la belfasta, happy to work through your options with you but those details are a bit scant for me without spending an hour googling the spec sheets. Happy to work thru shit here with you, in which case could you post me links to the respective spec sheets to save me googling, easier for me is always skype, drop me a cont req @ live:freemanjack.c60
        Dec 8, 2016
    6.  
      freemanjack
      freemanjack
      Let there be light and let that light be LED's!
      1. Olive Drab Green
        Olive Drab Green
        Particularly COBs.
        Oct 12, 2016
        freemanjack likes this.
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    Sometimes I do things
    I am not a noun, I appear to be a verb, a force of nature. R. Buckminster Fuller

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    I am not a thing, a noun. I seem to be a verb, an evolutionary process, an integral function of the universe. R. Buckminster Fuller
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