The early days of LED (light emitting diode) bulbs gave us high prices and low lighting quality. Now that this technology has matured, prices are down and lighting quality is up.
LEDs have a very long life span. This is the latest technology in lighting and is constantly evolving. LEDs have been around for a long time. They started out as very small semiconductors (about the length of a grain of rice) that are mounted on a printed circuit board. When an electrical current passes through the LED, the electrons are excited and emit photons that can be seen as light. Sometimes, bulbs contain a number of LEDs depending upon the desired light output and the physical size of the individual LEDs.
LEDs are used in indoor lighting, floodlights, flashlights, autos, and more. LEDs are replacing some neon lighting in Las Vegas. Unlike CFLs, LEDs achieve full brightness right away. LEDs are usually dimmable, look for “dimmable” on the package.
LED bulbs have a built in power supply at the base to convert AC voltage to a low voltage to light the bulb. They also have a metal heat sink which might make them unattractive for track lighting. Prices for LED bulbs are relatively high, but they are coming down. The quality of light, while not very good in the past, is now improving.
LEDs have a life expectancy of about 10 years. LEDs are expensive so check the warranty and keep the receipts in case they fail prematurely.
Some brands of LEDs tend to have a higher color temperature (whiter color), but are mostly available in a variety of color temperatures.