Diagram shows a circuit consisting of some elements. The input and output of the circuit is shown. Choose the correct option that shows the component in box. (Zener diode has a breakdown potential of 5V)
Options are:
Diagram shows a circuit consisting of some elements. The input and output of the circuit is shown. Choose the correct option that shows the component in box. (Zener diode has a breakdown potential of 5V)
Options are:
- (1)
- (2)
- (3)
- (4)
The Correct Option is D
Solution and Explanation
Input peak is $20\text{V}$. Output is clipped symmetrically at $+5\text{V}$ and $-5\text{V}$.
Step 2: Understand the function of a Zener clipper.
To clip both halves of the cycle at a specific voltage, two Zener diodes are connected back-to-back in series. When one diode is in breakdown, the other is forward biased.
Step 3: Determine required breakdown voltage.
Since clipping occurs at $5\text{V}$ and Zener breakdown is $5\text{V}$, the series combination will clip when the input exceeds $V_Z + V_{forward} \approx 5\text{V} + 0\text{V} = 5\text{V}$.
Step 4: Identify the correct configuration.
Option (4) shows two Zener diodes connected in series facing each other (anodes connected together or cathodes connected together). This configuration provides symmetrical clipping.
Final Answer: Option (4).
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