Quote:
Originally Posted by Juruki
^^ LEDs dont fade out. Its either ON or OFF
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False. LEDs can dim (fade out) depending on the driver circuit. The reason why these LEDs don't fade is because the driver circuit tries to regulate the voltage and current to the LED. The driver maintains LED brightness given an input range until the voltage becomes too low for it to keep it on. It is much more efficient than the resistor approach, but it loses the fade functionality.