Resistor Calculator
If you don't have a calculator handy, use this JavaScript resistor calculator to do the math.
Source Voltage
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LED Forward Voltage Drop
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LED Forward Current in Milliamps
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Needed Resistance in Ohms
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Using Closest Standard 5% Resistor
Closest Standard 5% Resistor
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Closest Standard 5% Resistor Wattage
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Actual Current
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Actual Power Dissipated By LED
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Actual Power Dissipated By Resistor
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