The real advantages and disadvantages of LED lamps, identified experimentally

I fully agree with all of the shortcomings listed.

To the fourth, we can add that if everyone starts to "save energy",

then the energy companies and the state will raise tariffs another 20 times in order to maintain their profit! The main thing for them is that we consume less and pay more!

In the early 70s, in the department, together with Zhores Alferov, I participated in the creation of new semiconductor devices.

They lie that we lagged behind world leaders! They wouldn’t give Alferov the Nobel if they were behind ..

Jaurès himself spoke about this very interestingly during the celebration of the 250th anniversary of the Academy of Sciences. Then all the presidents of the academies of sciences of the Union republics of the USSR gathered in his office. And Zhores Ivanovich, still just a doctor of science, told in a huge collection of bottles how we were ahead of the Americans for a month or two and drank these bottles in St. Petersburg or in Ilinois. Imagine taking an empty bottle for a collection from the USA !!!

I agree with the author of the previous post about tariffs.
For the monopolist does not give a damn about everything and everyone, we will save - stupidly hurt prices.
What, in general, we see every year!

And if you disconnect from this monopolist and put your windmill, solar cells? Or else come up with something .... And nafik send them all ....

And yet, these vaunted LED lamps very often fail, saving just "zilch".

I personally installed more than 1000 LED clusters, and over a year of work in this field I have not seen a single burned one, including those that were put by people a couple of years before me

You can argue endlessly about the pros and cons. But:
1. LED is more economical - it is a fact. You can certainly buy cheap Chinese lamps (cost with delivery to Russia $ 5-7). But then you are really guaranteed a 50-60% degradation of the LEDs, driver failure ... But, for the same Chinese, everything is fine with Taiwanese or American diodes: there is degradation, but only in the first half-year by 10-15 % and further remains at the declared level and such lamps last for a long time (I have personally had it for 3 years) and they cost $ 8-14.
2. Flicker (strobe effect) is almost everyone. But it is treated by increasing the capacitance of the capacitor in parallel with the LEDs or by adding it in its absence. The main thing is that the lamp form factor allows this.
3. The direction of the light flux in most lamps is really 45-60 degrees, but there are diodes with a larger diagram (up to 120 degrees), well, no one canceled the use of diffusers, although, as the distinguished author correctly noted, due to some loss in aperture .

Advertising of energy-saving light bulbs is dictated by concern for another monopolist - housing and communal services. It has long been necessary to upgrade Soviet networks.So big heads decided that by promoting energy-saving light bulbs, you can partially alleviate the severity of the problem.

The original unit of measurement of the progress of the USSR in the number of bottles drunk by Comrade Alferov in the country ahead of other states. What a pity the poor doctor of sciences. What a torment to bring empty bottles from abroad to the USSR. But the persistent scientist did not just bring glass containers! This collection went down in the history of Soviet science as an example of a month or two of capitalist scoundrels. While you admired the traces of past banquets, China firmly captured the market for energy-efficient light sources. Russians !!! You too can contribute to the development of science. Take the glassware to the Academy of Sciences Museum. We replenish the museum.

The author either deliberately misleads the readers or simply does not understand the question. LED lamps (suddenly!) Are different. Just like any other goods. On the topic of saving, many people dream of cutting down Poland without thinking about what harm they cause to the image of the whole technology with a low-quality product. In the topmost picture is an example of a virtually defective lamp. The marriage is laid in the design. The LED must not be heated above the rating for which it is designed. To remove heat, a radiator should be used at the rate of 20-30 cm ^ 2 per watt. If - this is not so, the LED (Chinese, Korean, etc.) will die not just in 2 years, but in a couple of months. A 12-watt driver (costs a maximum of 300r) does not ripple in principle, and there is no need to sculpt any capacitors. Powerful LEDs have a typical scattering angle of 120 degrees. The luminescence spectrum is determined by a phosphor which does not differ from that used in LDS. Pulse sources (again suddenly!) Are used: in computers, televisions, chargers, etc. In this case, this type of source is an advantage - the brightness does not change due to voltage drops. About the railways: go to the Finnish station in St. Petersburg. - there is no lamp except LED. On the fifth point: take a 12-watt LED lamp with a cost of 560 rubles and a 75 watt LV lamp with a value of 7 rubles. Let them burn for 50,000 hours. calculate energy savings - the correct answer is 6300 rubles at a tariff of 2 rubles. Thus, I do not see a single drawback of a properly made LED lamp. Let's make our world cleaner from mercury and toxins!

The author is not qualified - a complete ignoramus. A linear fluorescent lamp in a T5 bulb gives 105 lm / W, and LED linear no more than 90 lm / W, not3 times less than that of fluorescent lamps, "according to the author.

kritik,
105 lumens is at best, and even rather expensive lamps have the same first three months. But the rulers on cheap and high-quality Samsung diodes give 110-120 lumens per watt. And while it does not degrade so quickly.

Let's be objective!

A year ago, I bought a GAUSE 5W LED lamp for 500r and already 3 times changed it under warranty. The store was not willing to change. In all cases, the lamps worked normally for 3-5 months, then the light music began (blinking, blinking, periodic decrease and increase in luminosity). This annoys me a lot. I think I will change it before the lamp warranty expires, this is 3 years judging by the passport. Then you have to buy a 12vatny luminescent for 50r (China). Although the Chinese is cheap, but they worked for me regularly 1-2 years regularly and paid off in a year

I have a bad feeling that the article and the first comments are “ordered”. I am a specialist in this field, so I can judge.

Where do these prices come from? Option one - looked at leading Western manufacturers. Despite the fact that high-quality and manufactured in Russia lamps (based on Cree, OSRAM, NICHIA, LG and other excellent manufacturers) twice cheaper. For 2,500 p. I will find you an analogue of the standard new raster lamp (new, because with degradation the raster will lose 30-50% of lumens). For 5,000 p. - The same Armstrong, but twice as powerful.

About the rest of the minuses: 100% true for consumer-friendly Chinese fixtures or for fixtures assembled in a garage in the backyard.

# 9 maniak is absolutely right - there are low-quality lamps in the pictures. See those - pass by. I will say more, you can not even look for high-quality LED lamps under a standard base of standard sizes. The reason is simple - you can’t put a high-quality driver and a powerful cooling system into the standard form factor.

Let's go according to what the author said.

Come on, give us, what harmful metals have you found in LED lamps? Enlighten us in this matter!

About degradation. LEDs are afraid of high temperatures. If there is no excellent heat sink in the lamp, it will die. If there is. The declared period will burn. Take a look at the OSRAM website and see the results of a laboratory examination.
And generally speaking! Everything else degrades even more quickly. DRLki lose 30% of the brightness of the light flux in the first 1000 hours.
And the LEDs have an "extension". For the first 1000 hours, the following occurs: the LED increases the brightness ~ by 5-10%, then loses up to 10-15%, then it reaches the declared level and holds it to the end. For proofs - again to the OSRAM website.
And further. The same Nichia diodes will serve faithfully. Diodes from China are born dead.

About payback. If you have one light bulb, then yes, in life do not pay back. Do you have an enterprise? Order a lighting calculation (large companies do it for free) or pick up a pencil yourself. You can pay for both 3 and 2, and less than a year. By increasing the level of lighting. Proof - on the LEDEL website, for example.

About the trouble of lighting. What lamps do you have? How many Kelvin? A Chinese man who burned a phosphor in a month and came close to ultraviolet? And what is the flicker coefficient?
Unpleasant just luminescent (including compact). Due to degradation, long ignition, hum during operation, strobe effect. Well, all the other lamps, where the phosphor quickly burns out or the temperature was initially above 5500-6000 K.

About directional light. The lie is pure. Yes, he is directional and this is a hell of an advantage !! Okay at home, back and forth, but in rooms with ceilings above 4-5 meters, this is critical.
Orientation is a plus, because:

- there is no loss of light flux due to the reflector
- the ceiling is not illuminated (why do you need it? especially if it is an office or a workshop?)
- there is no loss due to the form factor (as in CCL, where the light shines on itself)
- finally, it illuminates only what really needs to be illuminated

In other words, the directivity of the light flux, coupled with lenses, can additionally save.

About quality components. Dear ones, which ones? Yes, more expensive than other lamps, but again - up to 5500 p. for “Armstrong” can’t reach simply by definition. I have never seen such prices in my life.

About fluctuations in the network. Fluctuations in 1000 watts many fixtures stand? But LEDs can.

And many of the pluses are simply forgotten. For example, absolute indifference to the number of on-off, to the duration of work without interruption. Instant ignition even in cold weather. Resistance to mechanical damage (on the background of CFL, which can not even be touched with a finger, this is generally so). Well, etc.

The article is not custom-made. I do not write custom articles. Everything that I wrote on this and other sites is my personal point of view. The article is an attempt to consider LED lamps from a critical point of view, compared with the massive, psychotic-like, widespread praise of them. The article was written over a year ago, so prices may have changed. They were taken from manufacturers catalogs by me.

The main point of your comment is that all the problems described are typical only for relatively cheap LED lamps, but if you buy Cree, OSRAM, NICHIA, LG and other excellent manufacturers, then everything is perfect. Well, and what percentage do lamps of your favorite manufacturers occupy in the total mass of Chinese nameless LED lamps sold in our country?

All your attempts to refute the disadvantages of LED lamps described in the article are easily refuted. For example, why do I need a light source with a narrowly directed light flux. The ceiling is black from it, but this is not comfortable, and very sharp shadows appear. Under the lamp itself, everything seems to be normal, but took two steps to the right and you find yourself immediately in another light environment. Then, what to do if their color is unpleasant to me. You feel like in a morgue. Well, that's all. And what kind of CFL lamps are these that you can’t even touch? I touch it all the time and nothing is done with them. Maybe you confused them with halogens?

I do not recommend anyone to completely abandon the use of new light sources, but at the moment, you should wait until such lamps become cheaper, and not chase new-fashioned lamps without looking at the price and their rather poor quality.

So write, for heaven’s sake, that there are lamps and there are ... uh ... lamps. And then you all under one comb. There is a feeling that this is also a psychosis, but not praise, but reproach.

About the focus - well, apparently you have not seen how it actually works.

And the color ... What color? Buy from 3000 K and that’s it, you will be happy.

Using LED lamps, you can do different interesting things in a simpler way than using other light sources. For example, it is easier to illuminate a straight line of a roof or wall with LED linear fixtures than with classic spotlights or fluorescent lamps. But at the same time, any normal LED lamp will cost three times more than the same lamp with fluorescent lamps, so I have a conversation with many customers about which lamps to use usually ends at the stage "and how much does it cost?". After that, you can tell customers as much as you like about all the advantages of LED lamps, but from practice, the vast majority of people who I did lighting design are no longer interested in listening to.
Further, about the life of LED lamps. What is written in the specifications - 50 - 100 thousand hours - is a hypothetical thing, because LEDs have just been invented not so long ago and there is no practical data on the actual life of their service. It is one thing somewhere to conduct some experiments in laboratories under sterile conditions, another thing is data on the service life of real objects.
In my projects, I usually plan the normal life of luminaires with LED lamps for 7 years. But I always take trusted manufacturers, i.e. here a very serious factor is the issue of quality. It is important if you buy, then high-quality LED lamps. I love Italians. China is also different. There is high-quality, but there is such that in a year everything will have to be redone.

Damn, how tired of these profane talk about the conspiracies of companies and the state, in order to make us poor, stupid and cowardly, etc.

Yes, is it really so difficult to turn on logic and impartially consider the situation. Saving electricity to the population on lighting is extremely beneficial for both state-owned enterprises and energy companies, if only because our population pays a subsidized price for electricity, and evening load surges negatively affect the efficiency of energy generation (much easier - I started the generator in the morning and turned it off in the evening), here you can add the costs of operating transformer stations and power lines to the public, because it is much cheaper to get power lines to the prom.district and remove from them at 3.5r / kW / h, which increases the capacity of power transmission lines to private owners because subsidized tariffs of 1.6r / kW / h are no longer a burden and they heat garages and greenhouses with heaters. And what is the theft of electricity by the population, which is also difficult to track and stop, and energy companies would be happy not to supply the population with electricity, but fortunately this is not for them to decide.

The article would be rightly called "The real advantages and disadvantages of LED lamps, identified experimentally by an amateur who is greedy for a high-quality product."
Fellow citizens, if you buy something new, I recommend using a product of manufacturers with a reputation.
I will describe the advantages of a LED high-quality retina that I see:
- reduced by 3-4 times (from DRL) power consumption
- lack of ripple (depends on driver components)
- lack of energy losses on ballasts
- low cosF <1
- unconditionally long life of the LIGHT - not a LED (the LED itself can work for 20 years under the right conditions) 5 years manufacturer's warranty (after 5 years it will most likely go to the point that it may or may not be necessary to change the driver) .
- low degradation of the light flux of LEDs (under the right conditions: heat sink, voltage to the diode).
- vandal resistance
- lack of labor costs for maintenance (change of lamps, chokes).

Paid comrades will convince us that in the first year we will get not only payback but even profit from the use of LED lamps. This is certainly not the case. I considered using different methods and it turned out oddly the same figure - 5 years. For 5 years (either the emir or donkey will die) a lot of things will happen, in our conditions it is not worth hoping for such a long time.

You can even use the reflection of the sun. Ultimately it will be as convenient for the government. If the LEDs occupy a dominant position, then the first ones will be clogged by the tail. that there is little consumption, that there is not enough money for the maintenance of energy networks, etc. As a result, the price of electricity from 3.36 (Peter) will increase to 4-5 rubles. The more savings, the more expensive 1 kW / h. Therefore, calculations are only a theory. And in Russia, one decree can cross out everything. Therefore, calculations should only be done with a forecast of 2-3 years. And then it makes no sense to guess, unless of course your industry is a state structure or a monopoly. In the private sector - unrealistic. By law, you can’t even put 1 1 MW diesel generator into the village and give them food. As soon as you do this, the guys will come right away and ask you to fix it all. Energy is a monopoly, and since Since our state has a whole map, it is only possible in theory to consider profit.

Opponents only see flaws, but no pluses.
Only cheap Chinese are on the market. They do not want to buy expensive high-quality ones from us.
Cheap electricity and therefore a long payback period. I sell lamps from China, but first I'm testing a model. If it does not meet the declared parameters, you have to redo it and do not buy such a model anymore. The usual thing is overclocking. Declare two watts LEDs. But there are none. Simple overclocking odnovatnogo.
Advertise - 9-15 watts - actually 5-6, but without overclocking. Chinese sellers are doing this to increase sales. Give us more power and lumens. You can immediately calculate the size of the cooling part - the approximate power.
And most importantly, LED lighting is not only an LED, but a complete set that includes a current source, emitter and housing.
And the LEDs are progressing. For home lighting, models with COB chips.
Only five years have passed from industrial release LEDs. And prices are creeping down.

Sergei, if you want to put a generator with an overflow into the network equal to zero, then no one bastard (sorry) can forbid you to do this.This is how to prevent you from plugging in, say, an iron ... There is only one limitation - to set a change-over switch, in case electricians work in the network, so that they will not be killed by your nozzle. Well, there is another limitation - if you put a generator of more than 15 mW, then you need to go to wholesale the market, and if you start trading EE, but that’s not about us. But the fact that LED lamps are guaranteed for no more than three years is that the circuit uses electrolytic capacitors that dry and explode from heating .. Nothing can be done about it. There are lamps in which there are no Conders. And choose them. They really LONG work. Another condition is LED, if they work in parallel with other, say DRLs, during start-up they experience first an attack of inrush currents of up to several kilovolts - the bottom has the lowest power and they burn first. They must be set SEPARATELY from any other rubbish. And whatever they sing, the LEDs are the FUTURE !!!!

I’m not a specialist in the field of lighting technology and LEDs, but I’m a doctor, and one thing is for sure - as a doctor I recommend using LED lighting, but only one that has light close to the natural spectrum - some manufacturers have such markings of products as " warm white "or" daylight white "light. I myself use only such. The same recommendation applies to this review of your LED lamps:

I can explain why you do not like this light: most likely, you bought LED lamps with a cold spectrum of lighting. after reading various forums and reviews about such LED lamps, I can judge that they do not use filters, and the lighting spectrum is close to blue, which is why there is a feeling of "morgue". And by the way, the feeling of a morgue and a hospital is more likely to arise when using fluorescent lamps because of the flickering and ultraviolet light that they produce.

And now I’ll say not as a doctor, but as a consumer. In our medical center, LED lamps were installed, and everyone likes it. By the way, they have a good angle of illumination, there is no this effect of "narrow" light, but this is one of the chips of a particular manufacturer. And a warm light, again. The eyes are less tired than they were. At home, at first, there were Chinese cold-light lamps, but I didn’t like them either, until I figured out the issue and bought LED warm-light lamps - ours, by the way, are called SvetaLED. A year and a half ago, brought from St. Petersburg, it’s on fire - it hasn’t become worse for all this time. I use three such lamps in the chandelier - the ceiling is not dark. I advise you to try, they have a 10 year warranty.

Maybe I didn’t write professionally, but I will express my opinion about the LEDs and their good sides, I hope my review will be useful to someone.

The author of this article is degrading instead of LEDs ...
- The price has long been comparable with luminescent.
- There is no zebra, the dispersion is excellent.
- Any color: from cold to warm (you can not distinguish from the usual light bulb Ilyich)
-Glowing and luminescent with the quality of our electric networks burn out every day. (I know from my own experience. I put the LEDs in the whole apartment 2 years !! back and forgot what bulbs to change!)
-Also let this author’s child accidentally break his favorite fluorescent lamp, see how he runs in, and the LEDs do not beat because 90% have plastic bulbs ..
So think for yourself to buy junk "boxes" (maybe they'll give you a bunch of splinter as a gift) or keep up with the times ..

another fad .. burned LN - screwed clean !!! What to do with the LED bulb? Wash a plastic flask?

I have not heard such nonsense for a long time. Firstly, an LED lamp costs 1,400 rubles. And the payback period is about a year.The service life of the manufacturer declared 100,000 hours is approximately 11 years of continuous operation or an average of 27 years of work in the dark. After which the loss of luminous flux is not more than 30% and the lamp is considered waste. It all depends on having a good heat sink for the LEDs. And indeed, all of the above said by the author of this article of pure water x ... I.

kritik,
Another 1 wise guy. Where did you see that lamp? Even if it gives 105 lm, consider the loss on the reflector 30% and after the second month of operation, the lamp loss is more than 50%.

toxic metals - Indium, Gallium

Arsenic and phosphorus are also not particularly harmless compounds)

Concerning color - read about incandescent and LED spectra

The SD has a narrow peak of blue color - many do not like it (some consider it harmful)

the "warm" simply have a larger and wider yellow-red area but the same peak on blue, because most white diodes have a blue crystal and a yellow phosphor i.e. the spectrum is not solid !! (as with lum-x lamps)

I would not say that LEDs have so many flaws. Yes, the story repeats itself in the case of CFL lamps. The quality from Chinese flea markets like Aliexpress and the well-known Ebay is not so hot, this spoils the reputation of good LED lamps. LEDs are the future. And in 1-2 years they will be cheaper than energy saving. Quality will also tighten over time.

From my own experience in operating these lamps (I tried both the Chinese name and Jazzway, Navigator, Ecola) I can say that BBK Electronics can boast of the best offer in terms of price and quality. They have a 3-year warranty and a very competent lamp design. And prices are now lowered to enter the market.

Article which lamps and which manufacturers are considering? For a long time, normal manufacturers make lamps with a lens, so there is no rigid directivity, the light is distributed evenly. And about color temperature, what kind of research are you talking about? The light temperature of LED lamps is close to sunlight, which favorably affects the perception of the eye. I am silent about Chinese lamps, but do not scratch all manufacturers under one comb.

I can say that in China they do good things, but the price of good things is not less than for our good counterpart. Therefore, it is worth choosing those things for which at least there is a guarantee. And it’s definitely worth changing bulbs to LED ones. 1 time changed and forgotten 5-7 years. I tried LED lamps from domestic manufacturers; over the past 4 years I have never been disappointed.

It is clear - respect to the author - so we remain for the time being on fluorescent lamps.

in fact, in any dispute, 2 sides .... I have no complaints about LEDs AT ALL! but when, when calculating the payback of the lamp, I saw the numbers- shocked !!! Yes, I invested, but not a little .... BUT, I already see how the electricity tariff does not hit me! Competitors are tearing their hair, there is not enough money for everything, but I have norms, in a year my lamps will REALLY pay off and will make a profit! and you continue to sit on the luminescent and DNA

If we analyze the real reviews of people on the Internet about LED lamps (not taking into account the ads on the sites where they are sold), then the disadvantages of LED lamps are much more than advantages. Rather, one can even say so, no one can convincingly confirm the advantages, because too little time has passed since they were massively introduced into domestic and industrial lighting. Well, if purely for the money, then other types of lamps are more profitable to buy than LED ones, although, over time, everything can change and all the shortcomings of LED lamps will be defeated.

I watch people see nothing at all.And the LED light is unpleasant to my eye, it does not possess at least such de-spectrum as a simple incandescent lamp. So in the old fashion I put incandescent lamps ...

Everything is cool, everyone likes it. Both light and color. But there is one problem. The light turns off, and the bulbs continue to dim dimly. The connection is correct, the phase on the switch, zero on the bulb. There is no backlight on the switch. Explain what this phenomenon is.

All right, the author wrote. But a bunch of representatives of the "Horns and Hoofs" offices of course, like cocks, have flown up and will defend LEDs, because with them they have a huge profit!
No matter how warm the LEDs give, the spectrum is very strongly shifted to the blue region, which is very harmful for the eyes - it leads to the accumulation of lipofuscin granules in the retina and its premature aging and degradation. therefore, at home, especially for reading, in places of children's games, near a computer and as a night lamp, LEDs are categorically contraindicated. Read scientific articles in peer-reviewed journals if you do not believe it!

About the service life - that's right. And the crystal degrades (luminosity decreases) and makes them from current surges when turned on. I had 2 lamps - lighting the bathroom and pantry - lasted 6 months and 8 months. The store refused to change, so all this guarantee is bullshit. They said that supposedly you had surges, but how to prove that you had or weren’t ... Only in court, but because of 500 rubles, it’s not worth it.

About payback. Efficiency incandescent lamp has 2.6% (for 100 watt) Halogen (the same incandescent lamp, usually with chlorine) - 3 ... 3.5% / Let us take the worst value of 2.6%. The LED lamp has an efficiency (the best and of course the most expensive) -22% But! This figure does not take into account the efficiency of a pulsed current source - the best1 92%. 22 * 0.92 = 20.2%. So, lighting the apartment we use most often in the morning - 1 hour for collecting for work;) And in the evening (average winter / summer) and get about 3 hours. Now the total power (by incandescent lamps) is 200 W room + 100 W kitchen + 60 W bath or floor lamp. Round up to 400 W / day or 146 kW / year. So, incandescent lamps consume 146 kW, and how many LEDs will consume, at the same luminosity. We consider: 146 * 0.0026 / 0.0202 = 18.8 kW. The savings amounted to 146-18.8 = 127 kW or (at 3 rubles / kW) - 381 rubles !!! Notice, I took the best indicators (usually corresponding to the most expensive LED lamps). For a year you can’t save even 1 light bulb, but we agreed that we have a kitchen, a bathtub, a room (2 lamps) and a trsher. and these are 5 LED lamps (14 W, because the efficiency ratio is 0.202 / 2.6 = 7.7, then 100 / 7.7 = 13 W, and taking into account degradation, we will need just 14 W to replace our 100 watts by luminosity). These 5 lamps will cost you 500 r, which amounts to 2500 rubles. They have served with me for less than a year, let them be lucky and they will last 5 years. For 5 years you will save 1905 rubles and do not pay back your lamps even by 80% !!

Well, couch experts, all of us in this bullshit? argue like with math !!! I think that even the most lazy ones did not strain my calculations too much to check them. No integrals, only division, multiplication, addition and subtraction! even a third grader can handle it.

Conclusion! LED bulbs do not pay off! And considering their harmfulness to eyesight (proven !!) due to the spectrum sweeping into the blue region, I do not recommend buying them, especially if you have children, otherwise wear binoculars through them for a certain number of years! By the way, retinal degradation is not treated

Who said that the state is not profitable saving energy !! If you save energy, it will soon be possible not to think about building new power plants or even abandon existing ones. Yes, the price for lamps is still high, especially considering the current ruble exchange rate, but competition in this market is growing so I think the price will decrease in a few years.
And the previous speaker is stirring something up.
200 W + 100W + 60W = 360 W - This is an hour!
He writes round ..... 400 a day. - How so? Apparently an hour ...
For example, LED 15 + 30 + 3 = 48 W per hour
360-48 = 312 watts (saving per hour) or 0.312 kW, i.e., we get 5 hours a day for 5 hours a day: 0.312 * 5 * 365 = 569 kW - we get 1536 rubles for 2.70 r. all will pay off in a year, so in winter time, lighting often works from half past three in the evening until 22-23 hours.

The author of the previous answer, write not quite correctly. Firstly, it is unlikely that anyone everywhere will use all the lamps at the same time. Second, write down the full price of the lamp. The price of powerful LED lamps in one base, grows at times. Again, I'm talking about high-quality lamps of branded manufacturers, which, as it were, do not spoil the vision. Thirdly, viewing angles are not taken into account. Of course, this is a controversial minus, although for uniform illumination of the room you will have to change the lamp itself is a fact. In which there may be even more of these same lamps. And you don’t need to talk about big degrees, modern technologies, I can imagine how they shine. The ceiling will be a dark place in any scenario. Perhaps lamps have appeared in which light reflects well from surfaces, but again they will not be cheap. In general, if you do not like the shades of light, you can try to mix by adding one incandescent light to a lamp with several lamps. It will be less profitable, but still more pleasant for the eye.

It’s good if there are such disputes when everyone doesn’t finish something, trying to show everything in his light, I’ll try to thoroughly deal with all my boring things.

So on the classics it will be easiest. Take the base E27. Osram maximum power which I found on the official website of 12 watts. PHILIPS the maximum that I found 10.5 watts. So I’ll take the task used here about the room (200W), the kitchen (100W) and the bathroom (60W).
The room shines roughly for 4 hours in winter and about an hour in summer. 182 * 4 + 183 = 911 hours in the room. The kitchen is 2 hours in the winter, in the summer you can cook and dine in the dawn. 183 * 2 = 366 hours.
A bath or a floor lamp hour by day is sure enough 365 hours.
200 * 911 = 182.2 kW 100 * 366 = 36.6 kW 60 * 365 = 21.9 kW Tariff 2.99 rub.
(182.2 + 36.6 + 21.9) * 2.99 = 719.693 rubles. in just a year on energy.
Now we take OSRAM lamps. 12W found for 690r. One kitchen, two rooms.
6W-264r. To the bathroom or floor lamp.
We consider 24 * 911 = 21.864 kW 12 * 366 = 4.392 kW 6 * 264 = 1.584 kW
(21.864 + 4.392 + 1.584) * 2.99 = 83.2416 rubles. LEDs are spent per year.
The difference is 719.693-83.241 = 636.452 rubles. so much will be saved per year of work.
It was spent 690 * 3 + 264 = 2334rub. 2334 / 636,452 = 3,667205068096259 years. So much will be needed to recoup this acquisition.

Now the PHILIPS lamp. 10.5W-590R. 7W.-420r.
We consider 21 * 911 = 19.131 kW 10.5 * 366 = 3.843 kW 7 * 264 = 1.848 kW
(19.131 + 3.843 + 1.848) * 2.99 = 74.21778 rubles. LEDs are spent per year.
The difference is 719.693-74.211778 = 645.47552 rubles. so much will be saved per year of work.
It was spent 590 * 3 + 420 = 2190 rubles. 2190 / 645.47552 = 3.392847493271317 years. So much will be needed to recoup this acquisition.

It is up to everyone to decide whether this is a lot or not. I am not calling for anything, I just decided to consider the savings from the point of view of the consumer. After all, after all, I myself choose a winning option. Immediately make a reservation, prices can jump, since I took everything from online stores. In my city a year ago (winter 2013), I went to a company store and offered me a 6-watt lamp for 600 rubles. I did not ask anything more about LEDs.
I didn’t just compare with CFL offhand, as they already said, they are two to three times more expensive in energy consumption than LEDs. But with them the payback period will be more than 10 years. Of course, a daylight lamp is unlikely to survive as much, but how many LEDs in real life will last is unknown.

Now in the market of LED lamps there has been a massive transition from metal radiators to plastic ones. From my own more than 2 years of experience using various types of lamps, I realized that plastic is not suitable for LED lamps. Jazzway at 3.5 watts. Eco work for 1.5-2 on plastic radiators - then repair, soldering a burned out LED in a serial circuit and the lamp for some time. There are times when the lamp has nothing to help. So in October, I hung two 11W lamps on the street. Eco Jazzway A60. As a result, both failed at the end of February (they worked 24 hours a day). I thought that the cold winter weather would save the LEDs from overheating, but this did not save either.After replacing the lamps, I noticed on the plastic radiator (just along the rim of the LED plate) on the plastic radiator brown color on the plastic and realized “that it smells fried.” I opened the lamp and saw that all 20 pcs. - 2835 LEDs were out overheating, the entire contact cable also burned out. With a light movement of the hand, the LEDs could be torn off from the burned-out plate. This is such a sadness with the LEDs. Now I decided that I would never use plastic lamps again for home lighting. Now all the lighting at home I’m building on BBK lamps (it’s good that the supplies are large). From the last I made lighting in the bathroom based on BBK 3.3w GU10 on Sestek. To connect under GU10 I used the E14 adapter on GU10. I actually didn’t think that I would get so bright directional lighting from 3.3W lamps at a cost of 97 rubles (last summer's purchases).

I don’t know where such prices are, under "Armstrong" look at the Russian manufacturer Aton price of 2100 rubles. In the field of diode manufacturing, there are stated leaders and positive players. Philips, Osram ... I use diodes of these companies both in everyday life and in cars. that they’ve been burning in a car for 5 years, that in a private house.
You can of course put the Chinese with aliexpress and then criticize the diodes in general. Such situations smile at me. Initially, if you want a quality product. Then you need to buy it, and not try to buy something that is very similar to an LED. Warranty for some diodes is 12 years, for example Philips X-Treme Vision

The choice of diodes is large enough and it is very difficult to figure out and choose really high-quality products.

Jacob, thanks for the article. Almost 5 years have passed, much has changed. Six months ago, I changed 14 lamps to LED lamps. It turned out about 1000 UAH. Decent savings, I hope they will last a long time.

What kind of nonsense on your site about LEDs ?! You buy high-quality LEDs and drivers, you take lamps with good ventilation and heat dissipation, then about any degradation, flicker, etc. it will not go.

We bought LED 7 lamps in GU10 instead of halogens with glass. 3 year warranty. Everything was excellent for about 2 months. 3 pieces were burning in the chandelier, the light was soft, bright, no problem. And then it began. One burned out, a day later a second, a week later a third. Each burned out replaced with a halogen, that is, burned and combined halogen + diode. As a result, I took it for a guarantee, we check it in the store, and they burn !!!! I think the contacts are buggy. I inserted again the diode all three are on. An hour later, one is burning. I put the place of non-burning diode halogen ... Lit. I just do not understand. What is going on and how to deal with it. Help.

It is interesting to read articles from a seemingly very recent past. Only 5 years have passed and no one doubts the advantages of LED lamps))) But, of course, the question is not unique. This is the most typical investment. Moreover, the larger, the longer the period of profit. If you buy high-quality light. Such as Philips, Verluisant, Ledel, Lighting technology and similar quality, the lamp will pay off in a year or two and then will shine for many years, making a profit. And if you buy cheap China or domestic handicraftsmen, then it will last no longer than its warranty period.

I have been using LED lamps for a long time. Savings not only due to energy consumption, but also due to durability. Lamps do not flicker, like fluorescent. When turned on, they light up without delay.

LEDs have long been proven to be effective. I was convinced of this from my own experience. They are durable, economical, convenient to use. Here, many argue about their profitability - and so, I want to note that if you select an initially high-quality product, it will last quite a long time and without problems. I used lamps to install outdoor lighting in the country. Repair of the summer house was done in 2014, since then nothing has yet to be changed))). Now I’m thinking about putting LEDs indoors as well - I’ll just take a light-scattering filter so that there are no vision problems in the future. And about their environmental safety - so I think that they are not much more harmful than other electronics that surround us - the same microwaves, Wi-fi routers, mobile and tablets with their radiation, and what are the mercury thermometers! So the choice is yours.

Admin, set the date for the publication of comments, otherwise the article of 2011, and what year the comments are not clear.

The eyes are set under the sunlight - a fact. And everything else is to their detriment. So put incandescent lamps (the Sun is also an incandescent lamp) and do not hesitate in saving. Another thing is all sorts of dark wallpapers, carpets and other harmful excesses. Lost the good old lime, environmentally friendly and easily updated or water emulsion. Dragging along any wreck, incl. darkness. Then all are blind. At least pity your children.

I know from work - the efficiency and effectiveness of LED spotlights is undeniable. We work in two shifts, so when it gets dark we turn on the spotlights. There is enough light, the bulb and the case do not glow. In general, I recommend it, for the house and garden, too, is suitable. The issue of saving electricity is relevant.

My husband and I will never finish this repair and, if possible, do everything ourselves. But when it came to conducting electricity in the country, lighting the plot and outbuildings, I had to turn to professionals. They explained to me that everything had to be calculated: the estimated consumer power, the selection of fixtures, material, components, location and fastening. In general, to throw a wire from a post to a house there is also its own technology. Some brackets fasten, cables, metal tape. The quality of the product directly depends on the materials used, the compliance of the product with high technical and mechanical requirements depends on them: wear resistance, heat resistance, strength, resistance to corrosion. And in the end, the reliability of the entire system is guaranteed for many years. Energy saving is relevant.

Of course, LEDs are great for saving energy and your money! I haven’t heard anything about induction, but about LED you can read a huge number of positive reviews.

I used LED 20-watt light bulbs in the lamps at home and at work for more than a year, eyes were very tired (I could not sit for 10 minutes, my eyes closed), sometimes I caught bunnies, I thought to old age, and only when one of them burned out and replaced it with a luminescent I understood because of what ... I think to switch to incandescent lamps, health is more expensive than money .. All these theories are garbage experience all ...

I used, at first, energy-saving light bulbs. My electricity bill comes very expensive. It turns out a day 11 kW. I decided to rectify the situation and ordered LED bulbs from the manufacturer on Aliexpress. 10 pieces. changed in all rooms. Work well. Now I began to record data on light every day and it turns out that I spend 5-6 kW per day. The bathroom was dark, and now it’s even brighter. I read and write only under an incandescent lamp. And so everything suits me.

Yesterday I bought a 17W LED lamp, said I would try it at home, and if anything, I will return it.
It was declared as a warm color. Returned to the store today.The lighting is not warm, just like in a morgue, it gives sharp shadows, the room is 12 m3 and the lighting on the sides is worse than in the center and in general such an unhealthy light. She also did not have holes for cooling, it seems they should be and this part should be ceramic (?)
I have had Philips energy saving lamps for more than 10 years, but I wanted to be even more economical. Did not work out.

The disadvantages described in the article as of 2016 are irrelevant. The cost of LED lamps is almost the same as compact fluorescent lamps (housekeepers), there are cheaper options that are not inferior in quality. Modern lamps are protected against voltage surges and often do not burn out, including with frequent on and off. You can not say about compact fluorescent lamps (housekeepers), and even more so about incandescent lamps that can burn out on the first day of work.

That is, if you do not take into account the energy savings, then even the cost of purchasing lamps will be significant savings, if we take, for example, a period of time for one to two years.

LED lamps are very economical and amid constantly rising electricity prices, the savings are very noticeable. Lamps that work for a long time every day, in the first months, fully justify themselves and begin to save your money.

Modern LED lamps have good diffusers that ensure even distribution of light throughout the room.

As for the spectrum of the glow, you can choose a lamp with warm white light. According to personal observations, it is more comfortable to be in a room illuminated by LED lamps than under fluorescent lighting.

So many years have passed and nothing has changed. I just sat on old energy-saving ones, and I'm sitting. After completion, they completely stopped burning out. Well, of course they were not the cheapest, but let’s say average China. And oddly enough, I also feel tangible savings.
There is a good LED review site. The name is ice review, everything is honestly measured and measured, despite the worship of many LEDs, very objective tests, all in fact. Many tests on other resources write that they do not get too hot. Buy a real 10-watt LED (smd installation) in one case with 9 crystals and see how it will not heat up. Yes, except that the processor heatsink will cope. And look what kind of radiators, on the pseudo 10 wadded bulbs in the e27 base. Questions disappear by themselves.
To find the real LED equivalent of 100 watts of tungsten, you need to give at least 350 rubles. Who takes cheaper, I will say right away, you were deceived! I myself will sit on energy savers to the last light bulb. I just modify it slightly and forget what a trip to the store for a new one is.

Experience suggests that ice lamps are the best choice when buying lamps. I use them constantly and advise you. Several times more economical and practical than conventional. For the price, here the range fluctuates, but the most reasonable prices here are

I agree with the last comment, but have I been using Sun-Day Led lamps for a year and a half? For quality and price I am completely satisfied.

Hello! I want to tell the new properties of LED bulbs. I have already put three of them in my apartment. Shine very well. They consume little electricity and even cheaper than energy-saving ones; their service life is very long. Especially with 4-watt and 8-watt bulbs. The fact is that such low-power bulbs do not get very hot during operation and do not burn out for a long time. Powerful LED lamps get very hot, require additional cooling, and cooling radiators.So in the evening I decided to put the LED light in the corridor instead of the energy-saving one, I took the 8-watt LED light and screwed it in, and it already lights up a little, although the switch is off. I was surprised! And then it dawned on me - I have a switch with a backlight, and through this backlight a small current is supplied to the LED bulb and it glows a little. Well, he left it for the night instead of a night lamp in the corridor, so that his wife could see how to go to the toilet, and everywhere we need light, we are no longer young, pensioners.

Over, I turn to you, why don’t you tell others how you are modernizing your energy-saving bulbs. I’m telling you that LED lamps at 4 and 8 watts work normally give good light, consume little electricity and are slightly cheaper than energy-saving bulbs at 20 watts. At 4 and 8 watts, the LED bulbs are not heated very much and their service life is long. Already at 10 and 12 watts they are very hot. So their efficiency is worse, they spend a lot of electricity on heat! Tell your thoughts, do not keep secret. How do you make upgrades to your light bulbs. Are you somehow applying less voltage to the bulbs, or what? I did just that for incandescent bulbs, I connected various kinds of resistors, additional bulbs in series, capacitors. All this in order to reduce the voltage to 180 volts from 220. Then the bulbs did not burn out, put on the stairwells, there is a strong light is not very needed, because with this alteration the bulbs shone much weaker at low voltage.