Resistor Calculator  

 

 

Try our Resistor calculator to figure the needed resistance. 

Voltage Source

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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 Standard 5% Resistor


Closest Standard 5% Resistor Used

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Closest Standard 5% Resistor Wattage

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Actual Current

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Total Power Dissipated By LED

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Total Power Dissipated By Resistor

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