You must design a circuit for a light emitting diode. The circuit must be powered by a 3.3V power source and you need a current of at least 2 mA current through the diode to ensure sufficient brightness. At the same time you would also like to limit the diode current to no more than 5 mA to limit your power consumption. Calculate a suitable value of the current limiting resistor for this circuit if it is given that the LED will have a forward voltage drop of 2.1 V over it. Select a real resistor value from the E12 standard resistor series. Show your reasoning and calculations.

You must design a circuit for a light emitting diode. The circuit must be powered by a 3.3V power source and you need a current of at least 2 mA current through the diode to ensure sufficient brightness. At the same time you would also like to limit the diode current to no more than 5 mA to limit your power consumption. Calculate a suitable value of the current limiting resistor for this circuit if it is given that the LED will have a forward voltage drop of 2.1 V over it. Select a real resistor value from the E12 standard resistor series. Show your reasoning and calculations.

Electric Motor Control

10th Edition

ISBN:9781133702818

Author:Herman

Publisher:Herman

Chapter59: Motor Startup And Troubleshooting Basics

Section: Chapter Questions

Problem 12SQ: How is a solid-state diode tested? Explain.

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