220V 30W mains voltage LED (a better one)
HTML-код
- Опубликовано: 4 окт 2019
- Today let's test another mains voltage COB LED. This time it's a 90x75mm 220V 30W LED with 64x 3528 (or 2835?) SMD LEDs on it. It comes from Ebay for 3 USD including shipping (later I found another seller that sells it for 2.40 USD). It has three 3000B current regulating chips. It has about double the luminous efficiency of the previously tested mains LEDs!
You can support me on Patreon:
/ diodegonewild 
Наука
Wow this is such a brilliant design! It's super-efficient and ultra-reliable because of the absence of electrolytic capacitor. It would be great for public lighting but unfortunately not for indoor use because of the flicker which can be very annoying.
I really liked the way you demostrated and explained this. Thumbs up as always.
Big Clive frequently points out that modern smart meters in the UK have the option to bill for apparent power rather than real power. He thinks that some day they will bill apparent power. Which is going to make most LEDs about twice as expensive to run. Circuits like this will do a lot better under that billing regime.
Man! I love your videos! And the accent! Cat is ok too.
So informative and educational video and very interesting thank you
The more i watched your video,the more i love yourself.
This is something totally new stuff for me. Thanks Sir.
Thanks for detailing the future of LED lighting. Nice to see someone is thinking in China for a change..
hi
make LED Light 220v in my channel please see
I have a short persistence of vision so flickering LED lights really get to me. Much as this panel is super-efficient and reliable, I couldn't cope with the flicker.
Interesting circuit/chip, thank you
many likes to cat !!!
Very nice video, good job
Excited for the flicker reduction video.
Is there an address to give you something? (lightbulbs etc ..)
Helpful information. I like it 👍
Ben de beğendim :)
you can use your smartphone's light sensor to measure light intensity and it is very good specially for comparative measurements
@Mai Mariarti I use physics Toolbox Suite which gives access to all your sensors with some additional features!
I compared a few smartphone light sensors against a 15$ light meter and the error was between 20-50%. So it´s only a very rough measurement.
@@Basement-Science in part that's because it's very directional.
Wow, you're too good in your explanation it is very detailed plus schematic diagram. Hope you can add in your topic about IR control how to program multi channel IR controller.
Nice design, pretty good efficiency, I would love to see how you modify it to reduce flicker.
great tutorial
Very interesting design! In case of flickering I always use phone camera when i'm out shopping for LED, it works like a charm, then i get flicker "free" devices with the same efficiency, but i dont know about the power factor of course. also i bring a pice of printed photo paper with me to compare the color index.
Nice review!
that cat is cute and have a good sense of humor, i even like the explanations
Thanks for this video!
Thank you very much, i love your video!!!
You can use Ldr or photodiode to measure brightnes. Just measure the difference of resistance in front of the led with the same distance
Thank you again.
Thanks !
I put in my light ...the actual led individual units chip is really good .....it emmits less heat and need less bigger heat sink it's not blinding like cob leds but are reliable good for running all-night
Learned a lot from your videos !
I guess the datasheet of the chip could also be found in English under CYT3000B.
I think its also better for the power factor, and it does the acomplishment of reducing the current on the sine peak, meanwhile some cheap electronic devices only exploit this part of sine wave.
How would using a cap dropper on the front-end reduce flicker?
How to make this energy meter from an extension cord?
Nice cat! 🐱
16:36 how did you converted amp meter into power meter ?
17:03 i did measured light outputs of 30 watt led using mini solar plate PV connected with voltmeters . By comparing two different voltages levels of different light source with same distance ( by placing above it ) i can measure difference in luminosity
18:24 surprisingly you also did the same :)
I have the exact same LED light, but couldn't find a big enough heatsink to fit it in.
You Are Amazing
There are Apps for your Phone to measure the light Output of these LEDs. Would be interesting to get an Update on this...
i saw your experiment of radiation with gieger counter can you test it on crt tv and telk me diffrence between backround radaition and radiation from crt please please
14:55 "Even more salt!"
Interesting circuit, well described, just gotta get a couple to play with! Could you please add a link to the supplier as there are millions advertised.
And if you welded a large capacitor to the rectifier bridge output, would it reduce light flashing and improve efficiency? Could you try it?
He mentions that in the video. Doing so would increase the average DC voltage in the circuit causing the chips to overheat. That's why he is going to try switching one of the units to a capacitive dropper in a future video.
beautiful... I was wondering why the faulty LED lamps flicker.. its so clear now. I don't need to reinvent the wheel
Please, how did you make the yellow multimeter that you use shows you the power directly and thank you very much for the videos that you propose, it is very well designed, I await an answer if it is possible . ..
The multimeter is just a normal cheap one. It's the extension cord that does the magic. It's based on some chip that converts power into voltage (1mV - 1 W). And yes we are all waiting for a video about it.
The power strip contains this circuitry to convert power to voltage.
danyk.cz/wmetr_en.html
Why does the current oscilloscope view show the current increasing slightly as further series led groups are activated, shouldn't the total current stay the same, no matter how many led groups are in series??
What size uF capacitor for the capacitor dropper? 22:54
How could you measure watts in your yellow multimeter? Does anything have special functions?
The socket is special
Can you put a link in the description to the eBay seller where you bought this new LED please. For only $3, I want to buy 1 or even maybe 2 or 3.
If I connect three of those to three seperate phases and place them close together, the flickering should pretty much be gone. Right?
Yes :) but in most applications, it's not practical to wire 3 phases to it, unless it's a really big lighting installation.
Marco Warga - each lamp will still flicker, but the area lit by them will have much less flicker.
henten akcent a priezvuk robis naschval alebo to je naturalne ? :D
Is the solar cell taken out of the 230V phone charging camping lamp from one of your older videos? 😀
Yes it is
of course :)
Awesome
What is your professional background if I may ask?
Why do you ask why he asks, if I may ask?
@Mai Mariarti I might ask him then, simply because you are asking why I am asking you why you are asking him why he asks, perhaps.
@@Avetho this is why i dont ask question in public....fuck you people 😂😂😂
@@king-well-kong L0L
Have you used any of the 100watt led cob lights? They can be bought for less than $2.50 each and are super bright, only downside is some sellers send faulty LEDs but at the same time it's okay because if you complain you get a refund and you get to keep the led. I'm really curious about the actual efficiency of the LEDs because they seem to be way overrated in the specs. They don't have a driver so the user will have to get a power source that is efficient.
Excellent!!!! :)
How are you measuring power with that yellow multimeter?
The power strip contains a circuitry that converts the power to voltage, so the power can be displayed using any multimeter. It's this circuitry:
danyk.cz/wmetr_en.html
@@DiodeGoneWild You know that many of us are wondering how to make a wattmeter like yours. Can you build another one with a better ic mpy634? Please?
I want to order one of these, it is a good idea?
for lamp in the WC it's OK
for storage too
Looks like the designers were inspired by Tetris :)
Yes. It seems like the last segment of 8 LEDs is dead.
I have the same multimeter :D
Your cat probably thinks your nutty... Once a week you start talking to yourself and doing strange things for no apparent reason!
Cats purr to themselves and do strange things for no apparent reason. The cat thinks that, once a week, he turns into a cat.
How do you make watt meter using multimeter?
Use shaunt resistor
My eyes got tired quickly with flickering LEDs. Could you do an actual video on making it flicker free?
Flicker Free would only call for a beefy capacitor and that's it mostly. Not forget a inrush and a discharge cap, and there you go.
A video on how to do it would be nonetheless very nice. ^^
Do the LED lights flicker? Yes. But this is not normally noticeable to the eyes of a human unless there is rapid movement in your field of vision.
However, the way that the camera works makes the flicker much worse, as the camera takes a snapshot of what it can see at fixed time intervals but this timing is not synchronised to mains frequency. Hence some of the time the LEDs are bright and some of the time the LEDs are dark when the camera records an image.
Before the last crt generation and the televisions were flickering also,but wasn't so much annoying compared to a room light.
@@jensharbers6702 Which, of course, he says he is planning to do once more parts arrive.
Please include temperature measurements on next test vídeos we get an idea the relationship with the efficiency.
I came for the cat.
Be nice if they could come out with phosphors that have longer decay times to help reduce the apparent flicker.
Yes. CRTs (as used on oscilloscopes, radar displays and some computer monitors) used to be available with long persistent phosphors. But these were all monochrome. The problem I suspect is finding a suitable mix of long persistent phosphors that can produce white light (white light being a mix of all additive colours).
@@Mark1024MAK spot on. It is already difficult to make and evenly apply a phosphor that produces good light color. If the decay times of your phosphors is slighly different, that makes the light color much worse and dependent on the amount of flicker, which could even change the color depending on the input voltage in lamps like this.
At 14:25 the cat winked lol.😺
I used the same design LED but a 90w model in a security light. Very bright but only lasted a few weeks despite being mounted on a heatsink with thermal paste. I think best to run them at a slightly lower voltage to keep them cooler for long term reliability.
Leds are not voltage but are constant current driving and need current sensing and current tracking adjusting.But with lower current the result is not so light and impessive!!!
90W is going to take one hell of a well engineered thermal system to deal with!
You're right, the problem with the cheap security lights from China is that they use high wattage led panels bolted to a thin aluminium heatsink which is nowhere near adequate enough.
Even more heat sink compound or even more salt ?
Salt isn't very thermally conductive when it comes in a form of crystals with a lot of air in between of them :).
I was referring to your video about " even more more salt" you are great and educated i wish i could meet with you one day i wish you health and happiness
Well described, be nice to rearrange wiring so least lit LEDs were in middle of array moving progressively to most lit on periphery. Think i would prefer fo find a heatproof smoothing capacitor that was of a flat design to discreetly lie on board and live with fact that it would be first component to need replacing.
Given a choice, I would prefer the LEDs that light for the longer time period to be on the outside. Better yet, intersperse them.
@@Mark1024MAK Yes maybe since probably all automated interspersing would be same manufacturing cost.
Another thing i like is that it displays sensitivity to peak supply voltage, something us Brits are conscious of because we mostly have about 20 volts more supply voltage than Chinese so hopefully our often 250 r.m.s. volts won't blow it.
14:54 this hurts my eyes
Why still use 220V? (peak of 220V)
I calculated with 220V because the LED is rated 220V nominal.
your Chinese is perfect ;D
LOL great observation.
How yoj can measure power in that cheap multimeter there is no any power Management ?
Very ok cat
Anyone looking for these modules can find two suppliers by searching for “90x75mm led” (omit quotes) on AliExpress. One of them shows a slightly different input. More variations by searching for the brand “UMAKED”
Cool.
Any similar LED light efficiency improve by putting to a bridge rectifier output a 10uF/450V electrolitic capacitor. This improve the light output meanwhile raise up a power consumption and a generated heat. Of course my goal is to reduce a horrible 50Hz flickering. This is done !
The main feature of this control is the power factor correction. Note from the horrible data sheet the current goes up for the entire series with each step ; ID1=0.55V/R ID2=0.70V/R ID3=0.85V/R ID4=0.90V/R. With lots of assumptions from the data sheet it looks like the current limit changes and the next group comes on when the voltage of the next group reaches 6 volts indicating it is starting to conduct. It also looks like the design screwed up only having two diodes and connecting the last two groups together.
Hi...I am from Indonesia n video best...👍👍👍👍
At 12 min or so, can one do something funky with the order of switching? Using your numbers:
Instead of 1 .... 1 + 2 ... 1 + 2 + 3 .... more like
3 ... 2 ... 1 .... 1+2 ... 1+3 ... 1+2 ... 1+2+3
This pushes even further into the "unclaimed" portions. (3 needs only 40V to be useful).
It would be a nice idea but unfortunately there is no circuit to power 2 independently of 1, or 3 independently of 2, since they are all in series when active.
This would need a lot more transistors inside the IC which would make it more expensive. The efficiency is already pretty good, and since this won´t reduce the flicker much at all, it´s probably not worth it.
I like your accent !!!
I first I thought those diodes are (old ones) 2538, but then i see they are 3528. 2538's were not very bright.
14:51 how come we always obsess over getting the perfect thermal paste application for computer processors but not when it comes to other electronics?
Because you don't want to get thermal paste compound all over your expensive motherboard, because if you are going to overclock then small temperature differences make the difference as to whether you can get to the next multiplier or not.
@@edcooper2396 I thought it was to do with air bubbles and the pea method.
Often in electronics, thermal paste application makes very little difference. A CPU produces 100W or more heat in a given area. This LED has a bigger area but only dissipates maybe 20W. So if there are air bubbles (reducing contact area) or you use cheap thermal paste, there is still plenty of thermal conduction. The total *Thermal Resistance* is still lower than that of a cpu to the heatsink.
Diodegoneblind
What’s the blue and silver tube in your hand at about 14.30?
It's just another heatsink compound. The same one as in the syringe, just in a different package.
Jesus. Such a hard watch, but I needed the info.
Surely the accent is parody? Lol😊
oh my eyes....
You could try using ND filter on camera to make video seem more like what human eye sees
Danyku, česky už neumíš???
15:25 (pattern created by the flickering leds)
seems so obvious in retrospect
Do a video about a car inverter
I guess you meant a "cat inverter", don't you?
@@Bruno_Noobador no..i meant the inverter used in the cars
noice
27:17 fite me! xD
Good video but you should improve the exposure and lighting.
*BAAAAAARKK*
No, it’s a cat, not a dog 🤪
The 1Meg resistor *is* a discharge resistor -- for the phantom capacitance of the switch wiring ......
I think he said that at 5:57
@@COBARHORSE1 Do you always wait till the end of the video before you write a comment? ;)
Гамно эта наборка
Греется сильно ( нужен хороший теплоотвод)
При перегреве начинает занижать яркость.
На некоторых мерцания есть
FYI: Audio is clipping
You are doing the thermal paste thing on purpose, right? RIGHT?!