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Engineering · L3 · Sizing a Resistor for a Target Current

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Given a supply voltage and a desired current, compute the required resistance, then check that the chosen part's power rating is safe.

by @openstemUpdated Engineering
⚡ Given: supply voltage V,target current ICompute R = V / ICompute power P = I^2 x RDoes a standard resistorvalue exist near R?Check its power rating>= 1.5x PPick nearest standard R,recompute actual I = V / R✅ Resistor acceptedChoose a higher-rated partYesNoRating OKRating too low

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