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How do I reduce DC voltage with resistors?

April 26, 2017dc electronics Hobbies reduce resistors voltage

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How do I reduce DC voltage with resistors?

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DividerTwo resistors, connected in series, form a divider that can reduce a DC voltage to any desired value. Connect the free end of the first resistor to your positive DC voltage, and the free end of the second to ground. You will have a reduced voltage across the second resistor.CalculationUse the following formula: V2 = (V1 x R2)/(R1+R2) Where R1 is the resistance of the first resistor in ohms, R2 is the resistance of the second, V1 is the original DC voltage, and V2 is the reduced voltage you want.PowerUse resistors with a power rating greater than the square of the original DC voltage divided by the total resistance of R1+R2.