LM3914 Resistor R1 Calculator

Calculate R1

We start by calculating the value of resistor R1 by deciding how much current we want to give our LED. The absolute maximum current most LEDs accept is 30 mA, however, you will need to consult the documentation of the component you are using for the precise parameters. In this example the default value is 10 mA current.


Circuit Parameters

Max LED Current I LED (A)


Resistor R1 (Ω)





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