The light bulb is a great hallmark in human technological advancement, even used so far as symbol of invention. But there is a new player in the game of powered illumination and that is the Light-emitting diode.
A light-emitting diode (LED) is a two-lead semiconductor light source. It is a p-n junction diode, which emits light when activated. A LED light is also a huge improvement over the traditional light bulb, in many different ways.
More energy efficient, more reliable, more robust, and smaller, LED lights host many formidable advantages. However it’s not all good. LED lights have a high initial price and are more expensive per lumen, on an initial capital cost basis, than most conventional lighting technologies. They are also dependent on a consistent flow of electricity for optimum operation. A fluctuating current can reduce the lifetime of an LED light greatly.