I understand why we see them flicker in videos, but why do LEDs flicker at all when they’re powered with DC?
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They don’t need to be powered by DC. You can throw them in an AC circuit, it will just only let the current flow one way. LED stands for light emitting diode, a diode is just a component that only let’s current flow one way, also known as a half wave bridge rectifier. Picture a sine wave, and just remove all the bits That are negative. Now you just have the light turn off and back on at the same frequency of the sine wave.
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