Like any other LED, a 12 V LED is a semiconductor source of light. LED lights utilize the physics of how electrons behave inside a semiconductor material to produce light.
When an LED is powered up, a reaction takes place inside the semiconductor, which allows excess energy to be shed in the form of light. The name for this process is electroluminescence.
Different types of semiconductors can be utilized to reduce different wavelengths of light. Over time, the capability for LEDs to produce a wide variety of different like colors has expanded tremendously, making a possible for builders to use them as indicators, actual sources of ambient light and beyond. LEDs are notable for producing a very clear, penetrating sort of light, which makes them ideal for circumstances when actual illumination is required by human beings.
LEDs have the advantage of being very small. This allows them to be used in applications where hundreds or even thousands of them are grouped together to provide one particular function. Combined with a microcontroller, the LEDs can be set up so that they display pictures, allow billboards to switch back and forth between different messages, provide spectacular lighting shows and more. Combined with their lower power consumption, LEDs make it possible to construct enormous, environmentally friendly signage, such as the type that is seen in the central areas of some of the world’s largest cities.