Practice - Zener Voltage Regulator: Stabilizing the DC Output
Practice Questions
Test your understanding with targeted questions
What is the Zener voltage of a Zener diode?
💡 Hint: Think about the voltage level it maintains.
Why do we use a current-limiting resistor in a Zener circuit?
💡 Hint: What happens if too much current flows?
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Interactive Quizzes
Quick quizzes to reinforce your learning
What is the primary function of a Zener diode in a circuit?
💡 Hint: Think about its use in voltage regulation.
True or False: The Zener voltage can change significantly with load current.
💡 Hint: This is a key feature of Zener diodes.
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Challenge Problems
Push your limits with advanced challenges
Design a Zener voltage regulator for a circuit that requires a stable 5V output despite variations in load current up to 15mA. V_in can vary from 9V to 12V. Calculate R_S and check the power dissipation of the Zener given it has a maximum power rating of 0.5W.
💡 Hint: Use minimum and maximum values for calculations.
Assuming a load resistance of 100Ω draws a load current of 20mA. If the output voltage drops to 4.5V while the Zener voltage is still supposed to be 5V, assess whether the Zener is failing or if the load is affecting output.
💡 Hint: Evaluate the circuit conditions at maximum load.
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Reference links
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