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12 volt to 9 volt resistors?

Discussion in '3rd Gen. Tacomas (2016-2023)' started by Dcox, Oct 21, 2018.

Page 2 of 2
  1. Oct 31, 2018 at 12:46 PM
    #21
    BigWhiteTRD

    #21
    BigWhiteTRD Official thread killer (only crickets remain)

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    For the overall system, yes
     
    BigWhiteTRD, Oct 31, 2018
    #21
  2. Oct 31, 2018 at 4:26 PM
    #22
    Go Fish

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    Go Fish Well-Known Member

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    If your dropping from 12V to 9V, the voltage across the resistor is 12 - 9 = 3V. If the current through the resistor is .5A the resistor value is V/R or 3/.5 = 6 Ohms. The power in Watts is I squared * R = .5 * .5 * 6 = 1.5 Watts.
     
    Go Fish, Oct 31, 2018
    #22
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