8.5.1 Example
Calculate the resistance in the following circuit for a red LED to make it consume around 20 mA.
Now, we need to build the circuit with a red LED, and we will use a high resistor, in our case, we
will use a 2.2 kΩ resistor and measure the forward voltage using the multimeter.
The measured voltage in this figure is 1.886 V DC
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Mastering the Art of Measurement (DM501D Digital Multimeter) r.01 www.plusivo.com
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