LEDs in parallel…

This topic contains 1 reply, has 2 voices, and was last updated by Eric Jones Eric Jones 1 year, 1 month ago.

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  • #7523

    Caleb Conner
    Participant

    Why should I have a resistor for each LED in parallel, and not just a single resistor for all of them? Why does it matteR?


  • #7524
    Eric Jones
    Eric Jones
    Galco Representative

    The resistors on each LED keep the current through the LEDs balanced. Because LED’s themselves pretty much have zero resistance, the external resistor is the only thing limiting the current. If your LEDs share a resistor and just one of them has a lower forward voltage than the others, almost all the current will go through that LED, and little or nothing through the others.


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