What Is Ujala Scheme?

"The Union government has launched a National LEDs programme - Unnat Jyothi by Affordable LEDs for All(UJALA) in Madhya Pradesh.An ordinary bulb is an extremely energy inefficient form of lighting with just 5% of the electricity input converted to light. The efficient bulbs like Light emitting diode(LED) utilizes only one-tenth of the energy consumed by the ordinary bulb & provides the same or more light. However, high costs of LED has been a barrier in adoption of such efficient lighting systems. To overcome these problems government launched UJALA scheme.The scheme is being implemented by Energy Efficiency Service Limited ( EESL), a joint venture of PSUs under the Union Ministry of power. UJALA is an important project of government of India where it wants every home in India to use LED bulbs so that the net power or energy consumption rate comes down & the carbon emission rate can also be checked.Key features of this Scheme are:Under this scheme a net 3 crore LED bulbs will be distributed in next six months in a state.Under the scheme, the people of Madhya Pradesh will get energy efficient 9W LED bulbs at an upfront payment of just 85 rupees per bulb. The scheme will not only help consumers to reduce their electricity bills but also contribute to energy security of India.The distribution of LEDs will happen by DISCOM offices, EESLetc.Overall targetsOverall target of number of incandescent bulbs to be replaced-200 millions. Expected overall annual energy savings- 10.5 billions KWH.Expected reduction of load- 5000 MWExpected annual cost reduction of consumer bills - Rs.40,000 crore.Annual estimated green house emission reductions - 79 million tonnes of carbon dioxide. What is Ujala scheme?.

Related Questions

Why don't we ever see blown lightbulbs on traffic lights given the high switching cycle, even back when there were no LED bulbs?

In the '70s my employer (Traffic Engineering Department, City of Charlotte NC) ran life cycle tests comparing several manufacturers' bulbs. Some were from big-name manufacturers and others you never heard of. All were typical 120V A-base screw-in tungsten incandescent bulbs rated from 69W to 120W. See Wikipedia for an informative article Incandescent light bulb - Wikipedia.Tests were conducted by the traffic engineering department using typical traffic light equipment of the day. The difference was astounding. One outlasted all the others, in fact several times as long as the worst. The bulbs lasted anywhere from a month to about a year before failure.The one that lasted longest was from a small outfit that later disappeared either to failure or being gobbled up by somebody larger. I'd like to think the latter.The information was vital to a large city with thousands of intersections to control. The cost of a bulb is negligible compared with that of sending someone with a bucket truck out to an intersection miles away from the shop, and stopping or diverting traffic until the replacement is complete.As a result of their tests, they scheduled one complete replacement throughout their system every six months plus replacement of individual bulbs as they failed. Prior to that replacement was quite a task to keep up with. Today's LEDs should improve that change schedule substantially. They are brighter, have more consistent color characteristics, theoretically should last much longer, and may be cheaper in the long run.I hope everyone has learned to manufacture long-life bulbs rather than hop on the bandwagon of new technology. Time will tell. Why don't we ever see blown lightbulbs on traffic lights given the high switching cycle, even back when there were no LED bulbs?

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Are LED bulbs more efficient than CFLs? If so, by how much?

Hi thereYour question piqued my interest because we know that LED bulbs are supposed to be more efficient than CFLs but I could not come up with an actual quantum. So I did some reading.I'm cautious taking what someone has written as gospel, just because it is on the internet and would advise people to similarly practise caution since there are tons of websites offering comparisons and statistics.One comparison, fromenergy.orgseems to show that a 15WCFL gives off the same light as a 12W LED bulb and seems to show that as the lumen output increased the efficiency differential decreased. Can this information be trusted? I'd suggest that you consider the following:The lumen output of a particular wattage LED bulb will vary from manufacturer to manufacturer for that particular bulb meaning that it's not possible to provide a generalised answerb in my viewLED technology is improving whilst CFL technology is rather matured and stable ; studies will probably outdate quickly meaning the small efficiency increase in the study mentioned is probably a larger difference todayThe 15 to 25 year lifespan of an LED bulb quoted in the study is simply nonsense. Most mainstream LED bulbs, in particular high voltage ones, will never last this long. Firstly they will suffer lumen decay which will reduce the brightness and the comparison becomes moot since the comparison is based on the wattage required for a comparable brightness. Secondly the built in drivers in these bulbs are generally cheaply made and of poor quality. I seriously doubt any of the LED bulbs sold today will achieve 15 years of use, whereas we know from actual experience that CFLs do last and that lifespan is around a maximum of 5 years

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Why do LED bulbs only last for around 20% of their stated lifespan (e.g., lifespan stated as 25,000 hours, but only lasting 5,000 hours)?

The LED itself is expected to last for many yearsifthey are fed with the proper amount of dc current.LEDs naturally operate at around 3 vdc. The voltage out of a common US receptacle is 120 vac. Connect that directly to an LED and it will glow brilliantly for about 1 millisecond and then fail. So to make a LED bulb that runs on 120 volts AC, you have to have a power supply that feeds the LEDs in the bulb with the proper voltage and current.The electronics that are used in the power supply are not rated to last for many years.When super bright white LEDs were first produced and engineers saw how reliable they could be, they excitedly told the world how wonderful these things were. They celebrated, as engineers do, by getting out the little jar of confetti they keep in the back of there bottom desk drawer. All together they flung a pinch into the air. The world is now a better place they all yelled. Then they went back to work. But this news was not taken the same way in the dark corners of manufacturing. No.Out of those dimly lit halls, wails of concern were heard. Clacks and whirs built as the future profits department began making their dire predictions. Ten year projections were sent up to the mighty towers of management. Red neon signs flashed the warnings.Bankruptcy, bankruptcy, bankruptcyThe mighty supercomputer was tasked to come up with some plan to save the companies. Cooling systems kicked into motion to dissipate the heat generated by the mighty machine and soon a solution popped out of the slot on this little white card. Upper management quickly snatched up the card and read,Planned obsolescence, build not a better power supply

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How do LED bulbs save electricity?

OP: "Do LED bulbs save electricity?"No. LED (light emitting diode) devices convert electricity to light. there is no facility for electricity to be stored within the device. In this sense, then LEDs only consume electricity.But, if one were to compare the consumption to other forms of artificial light generation, it is very efficient compared to incandescent.But not much better than Fluorescent.Any electric or mechanical modifications are at your own risk. If you feel that this is too complicated, then hire a professional. None of this information should not be taken at face value, since Quora is becoming unwieldy.If you are reading this in non-English region of the world, double check the definitions and idioms used. This is written in Canadian English, the portmanteau of UK English, Newfoundland English, US English, and Oz English.Toute modification u00e9lectrique ou mu00e9canique est u00e0 vos risques et pu00e9rils. Si vous pensez que c'est trop compliquu00e9, embauchez un professionnel. Aucune de ces informations ne doit u00eatre prise au pied de la lettre, car Quora devient peu maniable.Si vous lisez ceci dans une ru00e9gion non anglaise du monde, vu00e9rifiez les du00e9finitions et les idiomes utilisu00e9s. Ceci est u00e9crit en anglais canadien, le portemanteau de l'anglais britannique, l'anglais terre-neuvien, l'anglais amu00e9ricain et l'oz anglais. Alle elektrischen oder mechanischen u00c4nderungen erfolgen auf eigenes Risiko. Wenn Sie der Meinung sind, dass dies zu kompliziert ist, stellen Sie einen Fachmann ein. Keine dieser Informationen sollte zum Nennwert genommen werden, da Quora unhandlich wird. Wenn Sie dies in einer nicht englischen Region der Welt lesen, u00fcberpru00fcfen Sie die verwendeten Definitionen und Redewendungen. Dies ist in kanadischem Englisch, dem Portmanteau von UK-Englisch, Neufundland-Englisch, US-Englisch und Oz-Englisch geschriebenHow do LED bulbs save electricity?

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Why would an LED bulb shine very dimly if the voltage applied is too large?

Both Bob Myers and David Wilmshurst answers are spot on in their answers. Each is different because it is not clear if you really mean bulb or diode.Let me try to explain the difference.An LED bulb consists of one or more bright white LED diodes being driven by an electronic circuit designed to supply the proper current to each LED using 120 VAC in the US and 240 VAC in other parts of the world. A bright white LED diode is a semiconductor constructed such, that when low voltage current is passed through it in forward bias, the semiconductor junction emits ultraviolet light that excites a phosphor layer to emit white light.A common failure mode for bright white LEDs is one where the semiconductor junction is breached and shorted. This sometimes is propagated by supplying a higher voltage than the limiting resistor used in series with the diode was selected for, as Bob explained. When this happens, most of the current passing through the junction goes through the short instead of the portion of the junction still intact. The portion that does make it through the intact portion still causes some UV light. This type of failure mode does exactly as you describe in the question; glows dimly, but draws lots of current. So this could be the reason for the dim glow.But if you really mean LED bulb, an electronic package in the form of an old style light bulb, then its impossible to answer exactly what might be the cause. There are many ways to design an electronic package that supplies a constant DC current to an LED diode using 120 volts AC. Each design might have several failure modes that would cause the actual LED diode to shine dimly"