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  1. J

    Resistor advice

    the way i calculated the use of a 22ohm resistor for the LEDs is as follows: 3 LED's each at 3.4v will require 10.2v 12v - 10.2v = 1.8v 1.8v / 0.086mA = 20.93ohms rounded to 22ohm resistor. Can anyone tell me if my calculations is correct for my leds? like i said, i've powered the...
  2. J

    Resistor advice

    My LED's are rated at 3.2v - 3.5vMAX and upto 100mA max. I've put a 22ohm 1/2 watt resistor in the series circuit of 3 LED's and just want help to find it if that is the correct resistor. From what i have calculated, I should end up getting 3.4v and 86mA per LED. But i am not too sure and dont...
  3. J

    Resistor advice

    Hey everyone, I'm new here and wanted some advice on my LED circuit. I've got a 12v power supply and an array of 3 LED's in a series with a 22ohm 1/2w resistor. Can anyone tell me how much voltage and current each LED will end up receiving with this circuit design? Thanks
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