Screw in LED Bulb to COB like design?

S

sillyhead

Member
I have 1 taken apart, a 15w bulb. It consists of the driver, and bulb. These will run off 110v (wall outlet) so I will splice a 2 prong cord. Is it really as simple as connecting the wires, thermal paste, and mounting it to a heatsink?

Why is it so simple to do? Why does nobody do these, instead of spending $$$ on cobs?
 
CobKits said:
those are ok, cobs are more efficient

you can buy $5 A19 bulbs all day long at home depot but they will never be over 120 lm/W, cobs can run 160 lm/W+

those bulbs are handy though. most people just pop the plastic covers off and run them as is, with some lamp sockets or outlet-to-socket adapters

https://www.rollitup.org/t/got-my-ge-brightstiks.896869/
Click to expand...


Running 4 of them in parallel off one of the original drivers should get you to the 160lpm mark. Op is tearing them down anyhow so why not set them up for efficiency?
 
possibly, depending on the quality/binning of the chips.

im pretty sure i wrote about tearing down and measuring them in that thread. those drivers run up near ~100V and can run a cob as well, i think the cobs i tried they ran them all at 15-25W depending on voltage
 
CobKits said:
possibly, depending on the quality/binning of the chips.

im pretty sure i wrote about tearing down and measuring them in that thread. those drivers run up near ~100V and can run a cob as well, i think the cobs i tried they ran them all at 15-25W depending on voltage
Click to expand...

Good for adding in some supplemental lighting for any grow. Not sure on the binning, or, if it even matters since you are going to the other extreme of under driving. I would agree that top bins are best for driving high, but as you know the lower you go for current, the better the efficiency and lower the heat. Plus you can get them locally in all the good color temps for white.

And brings it back to DiY roots. Harvest parts and frankenstein. Mount them chips on all those aluminum bars and panels people are cutting to attach bulky heatsinks to and leverage that cooling.
 
i wont say i dont use them, but ive found its easier to use them as is then take them apart, i jsut did it for science.

but yes, take one driver run 2 boards with it, the boards will last longer, and you can throw that other driver on the shelf. only downside is exposure to AC, id pot or tape the heck out of any of the active terminals
 
CobKits said:
i wont say i dont use them, but ive found its easier to use them as is then take them apart, i jsut did it for science.

but yes, take one driver run 2 boards with it, the boards will last longer, and you can throw that other driver on the shelf. only downside is exposure to AC, id pot or tape the heck out of any of the active terminals
Click to expand...


Labor of love for sure. Science project most certainly. Even comes with backup parts.
 
i have a lot of different ones, they all have aluminum boards, some are screwed in, some are glued
 
Mine was very easy to take apart. I do not solder, so I will just wrap the wires together, and use shrink wrap on them. I plan on using 2 on a heatsink, also I spent 100 bucks on 2 cob setups, I will see which one I like better. Im in a nano sized space...think of a pc grow size. I plan on running 4 solo cup sog , lol
 
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