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LED Series Resistor Calculator Example
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Example scenario
Input: Supply = 9V, LED V_f = 2V, I_f = 20mA, 1 LED
Output: R ≈ 350 Ω → nearest standard value 390 Ω
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Practice prompts
- Change one value from the example to see how the output shifts.
- Explain each step to a friend or in your notes to reinforce understanding.
- Link this calculator with a related one (like conversions or probability) to form a project-ready workflow.