6.5.1 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.
Figure 26. The measured voltage in this figure is 1.878 V DC
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