How do lights in digital radios / alarm clocks / keyboards / etc, stay on for years and years without ever burning out?
In: Technology
They use LEDs at relatively low power. There is nothing that really cause them to burn out like other light sources do. Most other light sources like incadecent bulbs or fluorecent lights have parts that require very high temperature to give off light. This can cause them to degrade over time and eventually fail. A lot of these are also engineered to fail after a few years requireing you to buy new ones. Even LED light bulbs have issues with heat as they are passing a lot of current to get the bright light to illuminate the room. Industrial LED lighting usually comes with big heat sinks to get rid of the heat.
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