Huge LED diode

MustGro · Jan 27, 2021

I was at my friends place looking at his grow and he says," look at the light I got from work. They were throwing it out".
Now it's an outside light, made for a big place like a parking lot.
The first pic is the base with the led. Next is the driver that failed. The third one is my thumb next to it for size. The last 2 are it lit up. That's real bright!

JOO©E · Jan 27, 2021

MustGro said:
I was at my friends place looking at his grow and he says," look at the light I got from work. They were throwing it out".
Now it's an outside light, made for a big place like a parking lot.
The first pic is the base with the led. Next is the driver that failed. The third one is my thumb next to it for size. The last 2 are it lit up. That's real bright!

Haha yep, just a big ass COB! Was always curious how the LED street lights were being designed, guess it's just 1 big ass COB, ha, looks like 5700K (?), probably 70CRI. Someone on here might know exact chip model. I think citi makes a big ol whopper..

edit - the driver shows it can't be more than ~150W, so maybe not as big as I thought, but still pretty cool

PJ Diaz · Jan 27, 2021

Looks like a 50 or 100 watt COB.

Rocket Soul · Jan 28, 2021

MustGro said:
I was at my friends place looking at his grow and he says," look at the light I got from work. They were throwing it out".
Now it's an outside light, made for a big place like a parking lot.
The first pic is the base with the led. Next is the driver that failed. The third one is my thumb next to it for size. The last 2 are it lit up. That's real bright!

You could replace that driver with meanwells:
Either hlg120-42A or
Xlg-150-m-AB

Both drivers are slightly stronger than the original so keep lightly dimmed.

MustGro · Jan 28, 2021

JOO©E said:
Haha yep, just a big ass COB! Was always curious how the LED street lights were being designed, guess it's just 1 big ass COB, ha, looks like 5700K (?), probably 70CRI. Someone on here might know exact chip model. I think citi makes a big ol whopper..

edit - the driver shows it can't be more than ~150W, so maybe not as big as I thought, but still pretty cool

I was sure it was whiter than 4000K so your estimate of 5700K could be right on. I've never seen this style of LED before; wasn't sure what a COB was to be honest, had to look it up. Citi makes a whopper, eh. Guess I have some research to do.

Beehive · Jan 28, 2021

That's more of a tiny round led board. It doesn't resemble a COB except for being round.

MustGro · Jan 28, 2021

PJ Diaz said:
Looks like a 50 or 100 watt COB.

Rocket Soul said:
You could replace that driver with meanwells:
Either hlg120-42A or
Xlg-150-m-AB

Both drivers are slightly stronger than the original so keep lightly dimmed.

I messed up on the driver pic; it said 125 watts on it. My friend ordered a 125 watt replacement but not meanwell. I figured the driver failed and I had a 240 watt meanwell that will only run for an hour and then it blinks on and off, but it fires up. I brought it over and that's the driver that's lighting the LED up. Just a quick shot to see if it worked but it's likely overdriven in the pics.

MustGro · Jan 28, 2021

Beehive said:
That's more of a tiny round led board. It doesn't resemble a COB except for being round.

I have no idea personally but looking forward to learning about these big LEDs.

MustGro · Jan 28, 2021

Since I'm a COB newbie, I'm gonna put a few links in here for myself and anyone else who is new to them.

COB LEDs | SAMSUNG LED | Samsung LED Global Website

Advanced premium light solutions. Samsung offers a full line-up of COB products to suit all lighting needs small LES technology ensures high performance and superior color.

www.samsung.com

What Are

What are Chip-on-Board (“COB”) LEDs? Chip-on-Board or

siliconlightworks.com

The COB LED Grow Light Explained and Reviewed

Have you heard about COB LED grow lights, and now you’re wondering what all the fuss is about? Then look no further, because I've got a treat for you. In

www.epicgardening.com

what is COB LED chips on board

what is COB LED chips on board? COB (Chips on Board) , is a new technology of LED packaging for LED light engine...

www.cob-led.com

Best COB LED Grow Light (There Aren't Many Good Ones)

Most of the COB LED grow lights on the market are worthless. This review and comparison will help you find the best ones and figure out which is perfect for your needs.

growlightinfo.com

Mars Hydro CREE COB led grow light - Mars Hydro

Mars CREE LEDs COB led grow light With CREE 3590 COB, Brighter, Cooler, Higher PPFD IP65, Water-Proof QUIET to USE, Even in the BEDROOM Great Choice for Small Growers! Mars Hydro is the biggest led grow light and grow tent manufacture in China, we are providing one stop service for growers. and...

www.mars-hydro.com

Application: Horticulture - Cree LED

Horticulture and other forms of agricultural lighting require application-tuned ratios of spectral content, high efficacy and long lifetimes. Since these systems are designed to maximize yields for plants and animals, they require different metrics than lighting products designed around the...

www.cree.com

Quantum Board Vs COB LED Grow Lights (The Key To Deciding)

Both COBs and quantum board give you full spectrum white light that is great for plants. But there is one key difference that determines which is best for you. Learn...

growlightinfo.com

Are COB LED Grow Lights Better For Plants?

Learn why COB LED grow lights are great for plants and why, plus which COB chip is best and which brand uses those chips in reasonably priced fixtures.

growlightinfo.com

PJ Diaz · Jan 28, 2021

Beehive said:
That's more of a tiny round led board. It doesn't resemble a COB except for being round.

Chip on board (COB) is a method of circuit board manufacturing in which the integrated circuits (e.g. microprocessors) are wired, bonded directly to a printed circuit board, and covered by a blob of epoxy.

welshsmoker · Jan 28, 2021

I only veg with leds now, duck the hps and cdm ,currently running one that runs at 65000 lumens at 600 watts input, 6000w at output, but penetration is shit. No good for budding.

PJ Diaz · Jan 28, 2021

welshsmoker said:
currently running one that runs at 65000 lumens at 600 watts input, 6000w at output

How do you output more watts than you input? magic?

JOO©E · Jan 29, 2021

MustGro said:
I was sure it was whiter than 4000K so your estimate of 5700K could be right on. I've never seen this style of LED before; wasn't sure what a COB was to be honest, had to look it up. Citi makes a whopper, eh. Guess I have some research to do.

Haha ya I thought they made like a 5in × 5in 1000W or 2000W COB for street lights and such, but can't find it, so who knows maybe I was dreaming lol

Attached is a 600W COB by citizen, it's only about 1.5in × 1.5in, so probably similar in dimensions to what you have there, although I have no clue to what model you actually have. The level of cooling might be the limiting thing with that setup, or maybe the COB truly is only a 120W COB? Who knows :mrgreen:

Huge LED diode

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COB LEDs | SAMSUNG LED | Samsung LED Global Website

What Are

The COB LED Grow Light Explained and Reviewed

what is COB LED chips on board

Best COB LED Grow Light (There Aren't Many Good Ones)

Mars Hydro CREE COB led grow light - Mars Hydro

Application: Horticulture - Cree LED

Quantum Board Vs COB LED Grow Lights (The Key To Deciding)

Are COB LED Grow Lights Better For Plants?

PJ Diaz

Well-Known Member

welshsmoker

Well-Known Member

PJ Diaz

Well-Known Member

JOO©E

Member

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