Why does an LED need a RESISTOR? The Simplest Explanation.
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Why Parallel LEDs Each Need Their Own Resistors - Simply Put
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How to Calculate the Correct Resistor for LEDs Light Emitting Diodes
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GENIAL INVENTO CON UNA BOBINA!
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Does the resistor need to go before the LED?
19:50
8 awesome application of diodes in circuits.
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Does current decrease as it passes through resistor?
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Understand resistors better than EVERYONE, a PRO guide to all common resistors.
28:23