resistor for led question

Discussion in 'General Electronics Chat' started by lokeycmos, Aug 28, 2012.

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  1. lokeycmos

    Thread Starter Active Member

    Apr 3, 2009
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    7
    what is the formula for calculating the resistor i need for an led based on 120 volt half rectified mains given 'x' for led voltage and 'y' for led current draw? thank you!
     
  2. Wendy

    Moderator

    Mar 24, 2008
    20,766
    2,536
    LEDs off mains is a direct violation of TOS, it will not be discussed here. Nuff said.

    Try reading the AAC book on LEDs on the subject.
     
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