The real unsung heroes of the lighting world, LED has revolutionized the way we talk about energy efficient lighting. They do dozens of various tasks and are vinsiwineform.com found in almost all kinds of devices. From notifying when the devices are on to forming images on ajumbo television screen, LED is one of the most rapidly developing lighting technologies. What is LED? LED is a specialized form of PN junction diode which emits light when activated. When a suitable voltage is provided to the set .