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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.
Calculator and formulas for calculating the LED series resistor. LEDs are usually operated via a series resistor. The series resistor must be dimensioned in such a way that the supply voltage and the maximum permissible current are not exceeded. You can calculate the size of the resistor on this page. LED resistor calculator.
Use this tool to calculate the resistance required to drive one or more series-connected LEDs from a voltage source at a specified current level.
3 Οκτ 2024 · Calculation Formula. The LED resistor value is determined using Ohm's law, with the formula: \ [ R = \frac {V_s - V_l} {I_L} \] where: \ (R\) is the resistance (in ohms, Ω), \ (V_s\) is the voltage of the source (in volts, V), \ (V_l\) is the voltage drop across the LED (in volts, V),
This LED calculator will help you calculate the resistor values you will need when designing a series/parallel LED array circuit.
Find the resistor value and power required to connect multiple LEDs with our LED Series Resistor calculator using supply and forward voltage.
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.
