Evolution of Light Emitting Devices for Mass Deployment

Light has been one of the important things to mankind. It has been one of the primary sources of biological evolution of species on earth. Sun light is a natural one, humans always tried to create light & heat at will. Different forms of such artificial light sources like candles, kerosene lamps etc. were used until the industrial & technological advancement happened few centuries ago.
During industrial advancements, multiple innovations happened. One of the most important innovations in light history was Edison's Bulb and that invention put an end to all those candles, kerosene lamps and so on and we entered into the electric light era.
Lot of thing got evolved afterwards which even Edison couldn't ever imagine and we had a pretty long journey from there all the way through conductor, then semiconductors, then insulators & finally superconductors. Each of the word mentioned above is itself a big revolution in it.
All of these technologies contributed to the technological advances where we are standing now and yes, the bulb invented by Edison improved several times before becoming the tungsten filament bulb we see today.
The advancement in light emitting devices didn't end there. Tube light came in as Industrial lighting, with less electricity consumption. Halogen came in which can give high intensity lights. Sodium vapour lamps came as a solution to street lighting. CFL (Compact Fluorescent Lamp) got invented & they became main stream light source world-wide because of its less power consumption. CFL is kind of short form of tube light, with inbuilt ballast, with miniature electronic circuitry. All of these solutions were mostly involving electrical & some electronics engineering.
From semiconductor advancements, Light Emitting Diode (LED) got invented. It can give light whenever electricity passes through it, in controlled conditions. Initially LED was used for small indicators, and then it moved to industrial panels for control panels indicators, then rolling display, then every portable electronic device in one or other form etc.
With LED finding many applications, its light intensity also got improved & many new colours got invented. Now we can get very bright LED's which consumes really less power & emits bright white / yellow light. Finally LED torches & LED bulbs arrived, paving the way for energy-efficient lights & thereby allowing energy-saving across millions of households.
LED & CFL light market is very sensitive to the cost. The cost of CFL is relatively high as compared to filament bulb. The cost of LED bulb is even higher as it has entered into mass recently as compared to CFL entry. A day will come when majority of the houses will have highly energy-efficient light like LED. And when this happens I am sure the cost of LED bulb will fall to the level that anyone can afford to buy it & no one will do case analysis or price versus saving analysis in deciding if LED bulb need to be bought & in what time it can pay off the energy bill, it is going to save. When that happens filament bulb will become a thing of past & world would have moved to the LED age of lighting.
The advancement in Smart Grid Technology & Solar Technology will help the LED adoption to masses because of its low power consumption.
Author is a Sr. Technical Director at Mattozetta Technologies. It is an Engineering Consulting & Technology Service company working in the fields of VLSI, ASIC Design, Green Energy & Renewable Energy. It undertake turnkey projects. It also provide expert consultants to work for client companies.
Mattozetta is committed to help client companies in their effort to build world class products.

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Using Your PC to Share Files With Other Devices Using USB

Today many of us use gadgets and devices. These devices are often used to capture, store and enjoy different types of media files. The type of files include audio, video and picture files amongst others. People also want to be able to share these files so that they are able to access them on whatever device they have with them. Many electronic gadgets have an on-board USB port, which plays a great role in making this possible kind of thing possible.
New computers have at least one USB port. This make the computer the ideal candidate to act as the central store for the files to be shared. All USB enabled devices will be able to interface with the computer with ease. It is important that the central location used for storage is clearly labeled so that it can be found with ease.
Cellphone and pocket size media player owners often use their gadgets to listen to their favorite music. They simply plug in the earphones and they are able to enjoy their music in a world of their own. USB has made it easy to have your favorites on both devices. Files can by copied from the devices to your PC and the other way round. Done correctly, then you have a pleasure of listening to your music on both devices.
These days there are many devices capable of displaying video clips and movies. Amongst these devices we find cellphones, some multimedia players, tablets, DVD players and so on. Overtime people build up an archive of favorite titles which they enjoy watching. However, storage capacity of the movie capable devices does not allow that all of these files may be carried around. It is once again here that the PC acts as the perfect central storage device for that precious movie or video clip collection.
Special moments are often treasured memories that humans love to keep with them. One of the best ways of capturing such moments is by having a picture. Today photos can be taken with your cellphone or digital camera. Often we want to have these memories with us at all times. Fortunately it has become a simple matter of interfacing the devices to the PC via their USB ports. This allows you to copy these memories to and from the devices and PC with ease.
We often have special archive of audio, visual and image files captured on a number of different devices. Sometimes we have a need to move these files from one device to another. USB technology and the PC has made all of this possible without much hassle.
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