[Clive] There is an interesting video about Philips LED lights. Unless you live in Dubai, you cannot buy them. Obviously inspired by the ruler of Dubai, Sheikh Mohammed bin Rashid Al Maktoum, he wanted more efficient and durable light bulbs. secret? Ordinary LED bulbs use LED "filaments" of 1 watt each. The running time of Dubai bulbs is about a quarter of that of the bulbs, which means they need more LEDs to get the same amount of light, but they should have a longer lifespan and higher operating efficiency.
After exploring the brightness and color of different lights, [Clive] tore a piece and found some surprises inside. The voltage of each LED exceeds 200V, and the drive circuit has many pairs of components, which may be to keep the high voltage involved in a small size, although this may be to improve reliability, [Clive] is not sure.
By reducing the power, [Clive] can calculate that each LED strip contains 21 LEDs. He also noticed some oddities in the structure, which seemed to be for reliability and ease of manufacturing. We are not sure how this compares to the structure of traditional light bulbs. The circuit includes a bridge rectifier and a linear current regulator using MOSFETs.
The cost of bulbs is higher, but if you consider the possible long life, their total cost should be reasonable over time. In general, it is interesting that a good design comes from government regulation. Of course, this has a price: in exchange for the development of the bulb, Philips has the exclusive right to manufacture and sell the bulb in the next few years. They expect to sell 10 million lamps by the end of 2021, although they are currently only available in Dubai.
When we visited Dubai last time, their policeman was flying a quadcopter. If you want to disassemble a more traditional bulb, we have also seen it before.
Clive is a treasure. His voice is very smooth and soothing, his speech is not hurried, calm and unhurried, and he listens very pleasantly.
1 In fact, I did listen to his old videos while sleeping. Considering my tinnitus, it can help me sleep better. My wife is also used to it; although she doesn't understand English, she also likes his voice. So every night, we have at least three people in our bedroom.
If Youtube is unsuccessful, he can use himself as a sleep aid for patients with insomnia.
If you like someone who can make you sleep, check out Mr. Carlson's laboratory. But in a good way. His video is very interesting, but about his voice, if you are on the verge of sleepiness, you will be shocked.
I have to listen to his channel at 1.25 times the speed, otherwise my mind will want to know other ranch before he finishes talking.
Lock Picking Lawyer also has a very soothing sound when making videos. Before trusting any lock, he will also make you think twice...
I watched Clive and Mr. Carlson while studying and sleeping. Both are super mellow and very smart guys.
Paul Sellers, too, if you like woodworking.
He is like Shrek with a multimeter!
Really, and he is very knowledgeable and willing to share his knowledge. Learned a lot from Clive.
@Al Williams said: "LED from Dubai: Royal Lights You Can’t Buy"
Of course, you can buy everything you want-if you are in Dubai. I think it is only a matter of time for the Chinese to copy them, and then anyone can buy them in the form of "Dubai Light" on websites such as Ebay or Aliexpress.
They can already, but they won't. There is no secret here, just use the appropriate derating curve provided by the diode manufacturer and don't push it to the limit.
https://www.mouser.com/applications/lighting-derating/
Please note that commercial LED bulbs usually do not use automatic temperature compensation. Regardless of the temperature, they all use a fixed current, so the bulb will maintain the same brightness, which actually means that it starts to be very bright, and then immediately dims within 2-3 seconds, because the efficiency decreases as the temperature rises. After reaching thermal equilibrium, the light output will be reduced than stated on the package, because the standard test will not run for a long time.
Since LEDs are difficult to dissipate heat properly, and many have not even tried it, they will always encounter a derating curve. Each LED bulb is optimized to provide you with a nominal rated operating time and brightness under nominal test conditions, which means they can get so many lumens without having to spend more on larger diodes.
In a country where the "normal" temperature can reach 50 degrees, ordinary LED bulbs cannot be used at all. A few hours under these conditions is enough to permanently damage the diode.
50 degrees is abnormal in Dubai. On a hot day in midsummer, the temperature can reach this number. Even so, these bulbs are designed to work indoors, and since everyone has air conditioning, they will operate in a much cooler environment.
So why add double quotes, I'm sure they also have outdoor lighting, suitable for people and places that may not have air conditioning, such as your garage.
It can get hotter than there. A friend of mine has lived in Dubai for two years and he saw the temperature approaching 130 degrees Fahrenheit (54 degrees Celsius).
No one (even the Chinese) will voluntarily create a product that does not need to be replaced frequently, because it will hurt their business.
I don't understand the superstition not to replace the light bulb. If you have a 25-year-old light bulb, it just means that in the last 10 years, you will see a piece of garbage that darkens, discolors, and reduces CRI. You are compromising everything just to say that you don’t need to replace a dollar worth of electronics and plastic.
It is much better if the bulb goes out immediately after a few years, rather than gradually deteriorates after decades.
So you are saying that such a light bulb can be used for 15 years while emitting good light? Register for me. I am tired of replacing the LED bulb every 2 years.
In fact, in most of the LED bulbs I own, it is the drive circuit that fails first, not the diode. Without affecting the light quality, repairing the driver usually allows me to extend the life of the bulb.
Bulb manufacturers formed a cartel in the early 20th century to fix prices and required members to design their bulbs to only be used for 1,000 hours, imposing fines on those who produce bulbs with longer lifespans.
Don’t be fooled into thinking that such pranks are over, or that physical limitations are the main reason why LED lights degrade so quickly-modern light bulbs are *designed* to drive their components at excessive speeds, unless enforced by law (just like Dubai light bulbs.)
>Such light bulbs can be used for 15 years while emitting good light?
Relatively speaking. It is also not often stated which standard is being used, so the reduction in lumen output may be 50% or 70% or almost anything, and the color output change may not meet any standard at all.
If you watched Clive's video, you would have learned that the smaller the driving force of the LEDs, the less they degrade over time, and they stay in the expected color longer. (He cites the example of his porch light) Yes, I know that the plural of the anecdote is not data, but Arrhenius does tell us that aging (or the speed of the (chemical) process) decreases every 10°C Slow down by about half.
> It would be better if the light bulb was extinguished immediately after a few years,
After living in a newly built home for 18 months, I totally disagree. The builders used the cheapest LED bulbs imaginable (to meet city energy-saving regulations), but they began to fail after about 11 months. One at a time, the whole house. I am replacing them because they will last about 5 years before they start to degrade.
Please give me the bulb at a reasonable price, I don't have to think about 10 years.
It is this kind of thinking that x ~ 8 billion people have destroyed this planet. If it is not banned, IMHO should be avoided. I am totally opposed to manufacturers and brands whose products are designed to fail as soon as possible, that is, to make the most profit, that is, to maximize the waste of limited resources.
Architect Rau found an ingenious and simple solution...but the manufacturer's light is not a lamp, so they are interested in building a long-lasting lamp. https://www.ellenmacarthurfoundation.org/case-studies/ sell-light-as-a-service
Idiot, cars have become better and more reliable in the past few decades, there are TVs, and most electronic devices such as hard drives and computers
I do not know what you're talking about. The warranty period is shortening and repairability is starting to become impossible. This actually led to the European Union enacting a law requiring a 2-year warranty. Then there are calls for repair rights mainly aimed at Apple. (Microsoft, you too) And solid state drives? what
We have similar things for sale in Russia. Basically, they used the old "Ilyich bulb" glass casing (if any Russians had read this, they would understand), just replaced the nichrome wire with a filament, and added a drive circuit at the bottom. Not sure what is so "Unique to Dubai" among these bulbs.
Dubai is unique in that they use twice the number of filaments to drive at half the power. This is for the longer lamp life and higher efficiency required by local regulations.
In the Soviet Union, very advanced nuclear energy: the light bulb is dark, you shine.
They may pretend that they are the same, but they will not have the multiple filaments, duplicate components, or efficiency of the Dubai Light. The chief got what he wanted, pity us.
Yes, there are junk LEDs that have been driven, Fets and Caps that are too small... Good luck.
Almost all LED products will not properly degrade the diode rating, which will cause the lamp to dim after a few seconds of operation because it will become hot. You can understand how this will lead to a serious shortening of the product's service life in Dubai.
Oops! "Each LED exceeds 200V" should be "COB LEDs exceed 200V in total, and compensate for mains fluctuations"
Unless there is a 110-volt version, if they can buy them, it will not be of much benefit to people in North America.
Anyway, I use a dimmer with a "filament" lamp. (Please also note that this design is not dimmable, I would rather install a dimmer switch.)
You mean these? (Via bezosworld dot ae) https://www.amazon.ae/Dubai-Lamp-Warm-White-3W/dp/B07N7125GV
That Amazon page is for the United Arab Emirates where Metropolis Dubai is located. This product (ASIN B07N7125GV) does not appear on other Amazon websites, so you cannot purchase it directly through a normal connection. Of course, you can try a VPN connection, but if you can really buy a light bulb, pay for it, and then send it to another country, I would be surprised.
On this page there is a link to the seller’s page Gulf Electronics, which contains a phone number. Gulf Electronics is the authorized distributor of Philips in the region. Maybe if you contact Gulf Electronics directly, they might sell you one of these Dubai lights and ship it to you. In addition, these lights work at 220VAC and do not work at 110VAC. The price of a 3W bulb without 10 AED (Arabic UAE Dirhams) shipping cost is 35 AED or about 12.87 US dollars (including 5% VAT) and 12.25 US dollars (excluding 5% VAT).
There is also an email address on their website http://www.gulfelectronics.ae/ – info@gulfelectronics.ae
When checking out with a U.S. address...
Important information Some items in your order cannot be delivered to the selected address. Please change the address or delete the unshipped items to continue. Dubai lamp warm white 3W – LED filament lamp – Philips
If you have a US Amazon account, you can log in and buy things. But for me, it detected where my shipping address is (New York) and I rejected the bulb.
I said on another forum: Sometimes Clive judges things he knows very little too quickly. The beginner's mistake is annoying. In this video, did he calculate the parallel resistance of two 31 ohms to 62 ohms? People like Mark Rober and Destin always “proofread” their videos and find stupid little mistakes... But it’s hard for someone who is proficient in electronics like most of us here to figure out why In some cases, you divide the parallel resistance by 2, but here you need to add them together...
If you listen again at 19:55, Clive says "a total of 31 ohms, two 62 ohm resistors in parallel".
Glad someone has proved that they read their post 🤣
Are LED panels more durable than light bulbs? I don't want to replace them often, because when this happens, more high-quality materials (housing) will be wasted, not just the light source.
At least they tend to have some thermal management rather than none.
Maybe quantum dots will make everything better?
https://www.soundandvision.com/content/quantum-dots-and-micro-leds
Companies like "Philips" can design better products but choose to promote deliberately "defective" things. What about their "environmental certificates"? When you need them to emphasize true hypocrisy rather than meaningless rhetoric, where is the Extinction Rebellion?
Sorry, I got off my V8 hydrogen power high immediately :-)
The problem is that consumers cannot know how long the bulb has been used before buying it, so they will get cheaper bulbs. This is not something the company can solve. Just like what Dubai has done, this requires government regulation.
The light bulb cartel that year not only punishes its members for a life span of more than 1,000 hours, but also punishes them for failing to meet this requirement. There are two ways to make broken bulbs: make them too bright (hence "efficient") or darken them (hence long-lasting), both of which are undesirable to consumers and they are buying Factors that could not be found before.
Manufacturers used to have no quality control, they just filled boxes with things that came out of the production line that day. If there is a bad batch, they will use some good bulbs to plug it in to get rid of it.
The same is true for current LED bulbs. Only consumers must take into account the four variables: efficiency, color rendering index, lumen output and lifespan-consumers cannot measure or know these variables in advance, and none of them are well controlled by any standard.
You can (or at least can) purchase incandescent bulbs that legally last 20,000 hours. The problem is that they are much more expensive and they emit less light-they shine like 75w, as if only 25w. They are usually used for things such as traffic lights, where the cost of replacing bulbs is much higher than the cost of running them. AeroTech is one of these brands.
The 1000 – 2000 hours of incandescent lamps is a good compromise between efficiency, life and color.
In daily use, you also have anti-vibration bulbs. You can identify them by the small hammer logo on the glass. These bulbs are designed with thicker filaments and more support, such as ceiling fans. Their service life is at least twice as long, but you can get about 60 watts of power from a 75 watt bulb.
They can make 99 CRI LEDs, but you don't want to pay the $50 they want, and they don't want to sell you anyway, so all the bulbs you can find in regular stores are as bad as compact fluorescent tubes.
Now, if you want to have a good lamp to enjoy photos and paintings, and only want to see the colors they deserve, you must buy oven or stove cover bulbs and string them like a clown’s mirror to have a lamp There are 100 CRI.
I think the bulb with the hammer on it is a shatterproof bulb. It may also have some additional vibration resistance due to its intended use. These bulbs will be covered with some kind of coating so that if they fall and break, all or most of the glass will not fly through your store. These are useful in old incandescent chandeliers, just like you might use when working in a car. Hand-held things like this are easier to fall off.
Yes, they are designed for work lights, just like traditional kimchi can lights, with hooks that can be hung on things, but they are useful wherever a strong light is needed. They also have the characteristic that when you finally manage to burn it out, you will keep it energized and carefully rotate it until the broken filament touches one of the support posts, and then it will be arc welded there. The lamp will reignite and burn brighter, sometimes for several weeks.
Because they are made with thicker filaments, they can also withstand thermal stress better and survive repeated switching, so for things like bathroom and pantry lights.
Brave New World[1] should be a dystopia, not a manual.
"End is better than patch"
[1] https://en.wikipedia.org/wiki/Brave_New_World
It's like a boat in a bottle... How do they put all the filaments into the bulb?
They don't show up the filament first.
If the inside does not fit through the small diameter at the bottom, they will widen when inserted and then become smaller. See https://youtu.be/RVeXjwW0JJk?t=97 as an example of a wide neck, when the filament is inside, it can become smaller...
Wait, wrong Sheykh:| I confuse MBR and MBS. They only went out to play together, and then married each other's 12-year-old daughter (Jalila).
All we need is a secondary market for refurbished bulbs.
The first is "Stealing Copper", now there will be "Stealing Bulbs".
Back when LED bulbs were priced at $50, there was a show room of the "Energy Saving House of Tomorrow", and all the bulbs were stolen :-D
However, you still have to pay about $29 for 95 CRI 10 watt bulbs unless you find them in specials because no one buys them and the seller wants to get rid of inventory.
I found a website that sells some, and there I also found a strange fact:
"(REDACTED) The design of the 10 watt A19 lamp takes flicker-free light output as the primary consideration. Unfortunately, we can only achieve a power factor rating of 0.6. Therefore, these lamps are currently banned from sale in California and we cannot They are shipped to our California customers."
Title 20 seems to prevent the sale of flicker-free high CRI lamps because most will not pass the 80 lm/W or 0.7 power factor rules.
I bet that most bulbs in Dubai will fail in August (average high temperature: 41°C, 106°F; low temperature: 30°C, 86°F).
As we all know, if the "Arrhenius equation" is applied to electronic products, "a 10°C increase in temperature will shorten the life of electronic products by half." This is commercialized by the IC industry to eliminate the "failure of early infant death" from the standard "bathtub curve" (you put the silicon chips in a special oven, power them up and place them there for a fixed period of time, so that the chip This will fail in the first few years of operation, usually within 24 or 48 hours). Then you test again to see which wafer chips passed.
My understanding is that people in Dubai don't like to replace LED bulbs frequently, because of the naturally higher average ambient temperature and complicated circuits, especially when compared with tungsten bulbs, their failure rate is unacceptable.
I'm crazy, but if you put twice the resources into a light bulb and run it at the same level of performance, it (on average) will last twice as long under the same environmental conditions. The real question now should be whether production will generate twice as much greenhouse gas and whether the cost will double.
The inside of their house is temperature controlled. If they are like Singaporeans, the lights will never operate in an environment above 18 degrees Celsius.
When the temperature in winter is 18 degrees Celsius, they will not set the heat to 25 degrees? :-D
Cables, usually made of metal, are also excellent thermal conductors, located inside insulating materials, which are also very suitable for insulating thermal energy. The question is whether the heat energy conducted from the outside through the cable distribution network can be removed more quickly by the internal air conditioning system, thereby reducing the temperature of the end point by approximately 23°C (41°C-18°C) to ~12°C (30 °C-18°C). It will decrease a bit, but even under steady-state conditions, it will still be higher. And these devices themselves are also a source of heat energy, which will also inhibit any drop in the temperature of the cables in the insulating walls of the building. This is usually where the cable is found.
I want to know what kind of temperature you will see if you point the infrared thermometer at what is traditionally called a fuse box or switchboard, and your temperature-controlled house is 18 degrees Celsius and the external ambient temperature is 41 photos Degree. Which temperature will be closer.
And the air conditioner uses a lot of power, so it actually provides energy for heating the wire due to the I squared R loss in the wire.
Most LED lamp failures are due to the drive circuit, not the LED.
According to the structure and design details, investing twice the resources into LED lights can increase the efficiency by several percentage points and more than double the lifespan. For example, if the temperature of an ordinary LED lamp in the LED chip and driving electronics is 40°C higher than the ambient temperature, doubling the number of components to halve the current through the components may increase the temperature by 20°C above the ambient temperature. As a result, life expectancy has increased fourfold. We are lucky that LED technology has become so efficient. The efficiency of LED chips now far exceeds 70%. This greatly reduces the heat dissipation requirements of LED lights.
The link I inserted disappeared—my fault. http://donklipstein.com/led.html
> The efficiency of LED chips now far exceeds 70%.
This is not true. The theoretical upper limit of white LEDs is 38.1 – 43.9%. Even at 172 lumens per watt, the absolute efficiency is only 25%. The working power of ordinary LED bulbs is much lower than 100 lumens per watt.
We are not comparing 683 lumens per watt (44% of yours comes from this), but comparing the wattage of electrons input and the wattage of photons output. This is about minimizing waste heat in the diode, not about the maximum brightness of the human eye.
For this reason, the conversion efficiency of monochromatic light sources has reached about 90%, while high-intensity monochromatic light sources (used in greenhouses) can usually reach 70% conversion efficiency.
But it doesn't matter. You can use a single narrowband blue LED to achieve 70% efficiency, but no one puts it in a standard light bulb. After you add phosphor to generate other wavelengths to reach even 50 CRI, your efficiency will drop drastically.
When I explicitly say that it is about waste heat, what is it irrelevant?
This is what you said: "The theoretical upper limit of a white LED is 38.1 – 43.9%", but this means that its brightness is only 44% of that of monochromatic green light. This is why this attribute is called efficacy, not efficiency. But you don't want monochromatic green light, just like you want monochromatic red or blue light, so this is a meaningless comparison.
In contrast, even if our eyes cannot see that light, waste heat is important, no matter what wavelength is emitted. A device that converts 70% of its input power into photons of the desired wavelength means that it emits half of the waste heat of a device that converts only 30%, which means that its operating temperature is much lower.
I want to know if the Zener diode is connected correctly. I hope that there is a fairly high voltage on the gate of the mosfet when it is turned on. I would be surprised if it can work reliably without a Zener diode on the gate.
This is a very annoying LED filament bulb problem. Regarding Philips Lighting Co., Ltd. illegally naming LED filament bulbs in Arab countries such as Dubai, this is a very serious insult to us in the UK, who can’t buy them ? Or even this very important debate will eventually attract the attention of Phillips Lighting Co., Ltd. and the London HM Trade Standards Department, by banning the Arab country’s name Dubai (Royal LED Lights) in its scope to obey the policy rulings of the British government, and put By renaming it to the GREAT BRITAIN brand on our packaging box, the United Kingdom has manufactured LED filament bulbs that are not available in Dubai.
I want to buy these because they are more efficient and I think they will be sold on eBay, but they are not. How can I buy them in the US?
You can achieve this efficiency by buying a higher power LED bulb and using a dimmer to run at a lower power.
I noticed that my dimmable LED bulb can still illuminate the entire room in an acceptable way (for a bulb with a maximum of 15W) when set to a minimum brightness of less than 1W.
When will these be listed in Australia?
Great product. This is the so-called true innovation. Keep up the excellent work.
I want to know how long the electrolytic caps in these bulbs will last. Eventually, they may dry out and become the first component to fail.
What if they use ceramic or tantalum instead of electrolyte?
What are all the arguments about "LEDs recovering costs over time..."?
Here, 2 packs of incandescent bulbs are one dollar, but 4 packs of dimmable LEDs are also one dollar on Habitat’s local “reStore”.
Why would someone spend twice as much money to buy half the quantity of inferior products?
anyone? anyone? Buhler? Buhler? Buhler?
It is illegal to sell incandescent lamps, I think after 2014.
In the early days of LED lights—about 8 years ago—the price ranged from US$25 to US$50. They were made with good heat sinks and other symbols of good design. Nowadays, the price of LED lights is only 1/10 or lower, and they are manufactured with the smallest heat dissipation method, as simple as possible to use a capacitive step-down circuit, which will slowly die out due to transient spikes on the power line.
The bulbs lasted a long time if they were installed upright, so the heat was dissipated from the electronics in the base. But many lamps have bulbs installed underneath, so the heat rises into the electronic equipment, causing the electrolytic capacitors to dry up and there is no light.
I have award-winning Philips LED lights, and I sold them for $20-I bought them when the LED lights were first manufactured-and they have never failed. 10 watts and 920 Lm, CRI is 90. They are the best.
So does Clive. Excellent host.
Bigclive has at least 3 videos about this. One is that he introduced the Dubai lamp, the other is that he tested many different types of bulbs with external things to see which one can work without changing the circuit of the LED bulb, and the other is that he cracked the LED bulb to make them more Energy saving and longer lasting. The names of the Youtube videos are as follows:
"Lights you are not allowed to bring. Explore Dubai Lights | https://www.youtube.com/watch?v=klaJqofCsu4
Make your own Dolby lights – DIY Dubai lights (strobe alarm) https://www.youtube.com/watch?v=ISTB0ThzhOY
Smash and invade LED lights https://www.youtube.com/watch?v=H09SI5qLmtY
Use cheap LED flood light with lux/efficiency reading https://www.youtube.com/watch?v=biEZ1TbdhhU
Or go to the "bigclivedotcom" youtube channel and search for "LED dubai", you will find a lot of videos on this topic. https://www.youtube.com/channel/UCtM5z2gkrGRuWd0JQMx76qA
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