COB LED Panels, 10W, 70W, and 200W. Evaluating Temperatures.
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- Опубліковано 6 кві 2019
- In this video I try out some COB LED panels that I bought on eBay. Will the 200W panel really survive at 200 watts of power with no additional heatsink? I destroy two of the panel during the video. For more electronics stuff, see www.smbaker.com/
- Наука та технологія
Brilliantly done. This was exactly what I needed to know for my next project (4 of the 70w COBs on top of a 11m telescopic pole for camping).
Cheers 👍
what an interesting person to come by on here, probably from watching clive also through an algorithm, I didn't experience dead led's on panels either through my testing, I popped over to your website, I also ran remote access and telegard BBS software back when that was a thing, I remember a pit fighter and trade wars games, my dad also builds sand rails since the 70's so I do hot rods and stuff too.
More this kind of stuff. This was excelent video. Helped me a lot
Have you ever tried to expose the large COB panels to sunlight and measure how much energy they capture? (Volts DC @ Amps)
The dissipation in free air is going to be greater than mounted on an insulating surface, so mounting it under a wooden shelf will likely see higher temps. You really want to keep it below 15-20°C rise, depending on how hot your summers get. If it's anything like here, that could mean reaching 60°C or more in the peak of summer, which is enough to scold yourself on if you accidentally touch it. Definitely worth mounting it on a large sheet of aluminium with thermal compound.
Hi, a very nice test and presentation. It shall be more useful if you could share the information on the Brand and where you bought it and price. Thanks
im surprised how well they survived without heat-sinking, although its still best practice to cool them properly. these types of COBs can have bond wire breaking issues as the device expands and contracts with each heat cycle, not sure if it affects your COBs but its something to be aware of
The cooler they run the longer they last and the brighter they will be.
The 1000W rating is most likely an equivalent to an incandescent. With 200 watts of power, it produces light similar to a 1000W incandescent
great video were can i get one of these at do you have a link thank you jim
Thank you for the nice video. Can you include where you purchased them?
hi, i´m thinking of using the first list you did the test as a brake light on a motorcycle topcase auxiliary light. Do you think i would have temperature problems? i would use a 2mm fiberglass attached to the light to prevente heat in topcase plastic.
Yor're 200W LED panel is different to Big Clive's and is better quality, the quality varies from seller to seller, and its impossible to know what you're getting until you get it and test it. I have noticed there are lots of 70Watt panels but virtually zero 200W COB panels on ebay.
thank your test
Hiya great info,quick question for the knowledgeable,if I wanted to run this 200watt panel at around 120 watts ,would a 12v 10 amp led driver/power supply do the job or would the led overload the supply.cheers
The 1000w marking is what the equivalent light output is compared against.
cool!
that's quite a bit of heat.
20:30
Yeah, that was the best part!😂
Ajajaaajajajaaa
Perhaps he only pretends using those panels with out the use of a heat sink as he never mentioned them. Heat sink probably won’t be necessary if the panel is run at lower it’s half capacity. Proper cooling is crucial for this panels if used as intended...
Mr. Baker, while your video was somewhat interesting I have to ask, were you ever a technician or work in a technical job? I ask because of many of the remarks you make and techniques you use while performing the tests on the led panels. I admit I was frustrated watching and so my remarks could be biased due to that. While I have only an Associate degree in electronics I had the great opportunity to work very closely with scientists who had tons of talent and education like a Masters degree from M.I.T. or a doctorates degree, (one fella had only a grade school level education but did advanced engineering and design work on the particle accelerator our company built. Even has a patent on a ion source for generation of a ion particle beam. What talent! I was their "helper" you could say). In your video you made many references to wattage you were supplying the LEDs with but at no time did you ever make mention of the brightness or luminosity of the panels! Obviously it would have been a subjective measurement as I saw no measurement tool for such on your bench. And I'm not sure what one would cost but.... Don't you think your videos would be much better if you were able to get such measurements and could figure out optimal Efficiency of the lights? Measuring wattage versus illuminosity over the scale of the power you tested the lights at you would be able to chart the efficiency finding the most bang for the buck or the most lumens per watt at a given point. This would tell a lot about the panels and help a consumer to know were to run the panel at! Obviously if you had a 70 watt panel at which point it put out let's just say 300 lumens but at 50 watys it put out 270 and at 3 watts it put out 150 then it would be clear to see that 50 watts would be the more optimum wattage to run the panel at. Just something to consider. Otherwise thanks for the video.
LOL Mr. Fancypants.
I know you are just making up scenarios on how he could find the best efficiency but your numbers are completely fucked up. Kinda weird coming from someone who worked with super smart mit people... For example 70 watts for only 300 lumens and 50watts for only 270 lumens?? That's worse efficiency than a incandescent bulb. Then you say 3 watts could output 150 lumens which is more around what LEDs can output but the "optimum wattage" that you would want to run at is 50watts for 270 lumens? I understand what you were getting at but you may want to check your numbers.
Hi, great vid and informative as well... If you have a second could you give me some insight/advice (tech support lol). I know this vid is a year old but i got some color led cobs..im linking video now its under 2min ua-cam.com/video/rDWBSMkT1rw/v-deo.html BUT the 3 wired in parallel killed 2 of my voltage reducers in under 20 minutes, going to try one other in a couple days. Thats one question and recommendation BUT also any insight as to why the green led runs brighter than the red or blue in video? if theyre all getting the same voltage supposedly is that just part of their out put for their color spectrum? i assume if i wanted more output then Id need to overdrive those colors? (not that I have space in my eskate case) Thanks if you can help!
You start every sentence with um. If not you say um every sentence. Practice talking. Think before you speak.