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LED Resistor Value and Wattage Calculator Software

You will find this LED resistance calculator very useful for calculating the exact value, power, dissipation of a resistor for the selected LED. This tool will also allow you to calculate the resistor for many LEDs in series by assessing its total forward voltage drop value. The software will also enable you to calculate resistors for different colored LEDs such as red, white, blue green having different forward voltage drops.

Inputs

(Vs)

(Vf)
If (mA)
 
 

Outputs

(Ω)
(W)
(W)

2 thoughts on “LED Resistor Value and Wattage Calculator Software”

  1. Hi Mr swag.pls I need a Need a simple 12v 5min timer with relay circuit that has reset button.A button to trigger timer to off relay after 5minute and another reset button to on the relay back,but even though the power supply is removed and refixed it should not have effect to reset it.

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