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  • Sappa commented on noahw's instructable LEDs for Beginners10 months ago
    LEDs for Beginners

    Right, complete novice, so be gentle lolConflicting stories? I've read you don't need resistors, then you do, even a 5.1 Zenner diode was mentioned, don't run em in series etc. etc. I have 2 flashing Red LEDs & I want to run em off a 9v battery.......Do you run em in series or parallel?Do I need a single resistor or a resistor for each of the LEDs, if so, what resistors?RegardsTony

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