HI

LEDs are semiconductor devices that convert electric energy into light energy through electronic transitions. Different colors serve specific purposes: red acts as a low voltage indicator, orange provides prompts, and yellow functions as traffic signals. UV LEDs are used for sterilization and nail curing. Proper wiring is essential, as connecting an LED directly to a power supply causes immediate failure. These diodes feature unidirectional conduction, where positive energization activates the light and negative energization shuts it down.