1. Using an Example LED computation, What Value series resistor should be used to produce 21mA of LED, Rs = 1000 Q, the supply Voltage is 15 V. Assume that the LED drop is 2.5 V 2. If the supply voltage is 12V, the orange LED resistor is in series 4700, and the voltage drops of LED is 2V. What is the LEDS current?
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