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Calculate resistor values for LEDs using this simple calculator. Enter any three known values and press Calculate to solve for the others.
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Calculate the resistor to use in a circuit with an LED by entering the supply voltage, forward voltage, and forward current below. Optionally calculate the resistor to accommodate multiple LEDs connected in series.
This calculator will help you determine the value of the resistor to add in series with the LEDs to limit the current. Just input the indicated values and press the "Calculate" button. As a bonus, it will also calculate the power consumed by each LED.
Calculation of a current limiting resistor for one or more LEDs connected in series. This calculator is ideal when you have one or more consecutive LEDs and you need to calculate which resistance resistor needs to be connected to the circuit.
DigiKey's LED series resistor calculator uses supply voltage, forward voltage, and forward current values to help you identify the correct series resistor.
Resistors are key components in Light Emitting Diode (LED) circuits, protecting the LEDs from receiving too much current, which can damage or shorten the life of the LEDs. This tutorial will explain how to calculate the value of the resistor needed in a series LED circuit.
This LED resistor calculator will help you to pick up a right value of resistor for the LED in your LED circuit, you just have to input the values of Source voltage (V s), LED forward current (I f) and Led forward voltage (V f).
