Zener diode is used for

Options

A. Rectification
B. Stabilisation
C. Amplification
D. Producing oscillations in an oscillator

Answer

To solve the question regarding the use of a Zener diode, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Diodes**:
- A diode is a semiconductor device that allows current to flow in one direction only. It has two terminals: anode and cathode.

2. **Forward and Reverse Bias**:
- In forward bias, the diode conducts current, allowing it to pass through.
- In reverse bias, the diode blocks current until a certain voltage is reached, known as the breakdown voltage.

3. **Zener Diode Characteristics**:
- A Zener diode is designed to operate in reverse bias. When the reverse voltage reaches a specific value (Zener voltage), the diode allows current to flow while maintaining a constant voltage across it.

4. **Voltage-Current Graph**:
- The voltage-current (V-I) graph for a Zener diode shows that at the Zener voltage (VZ), the current increases sharply, but the voltage remains constant. This characteristic is crucial for voltage regulation.

5. **Application of Zener Diode**:
- Due to its ability to maintain a constant voltage, the Zener diode is primarily used for voltage stabilization in circuits. It ensures that the output voltage remains steady despite variations in input voltage or load conditions.

6. **Conclusion**:
- Therefore, the primary use of a Zener diode is for voltage stabilization.

### Final Answer:
The Zener diode is used for voltage stabilization.

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