Exam-style question
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Explain how a Zener diode can be used as a voltage reference in a circuit.
Model answer
What a good answer should say
- A Zener diode can be connected in reverse bias across a load to provide a stable reference voltage.
- When the input voltage exceeds the Zener voltage, the diode conducts, clamping the output voltage to the Zener voltage level, thus ensuring consistent voltage supply to the load.
Explanation
Why this works
This answer clearly explains the application of a Zener diode as a voltage reference, demonstrating an understanding of its role in maintaining voltage stability in circuits. It emphasizes the practical use of the Zener voltage in electronic applications.
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