Question
The output of the given circuit in Fig.
✓
Answer
- Would be like a half wave rectifier with negative cycles in output.
Key Concept:
- During positive half cycle,
Output signal → obtained
- During negative half cycle,
Output signal → not obtained
- Output voltage is obtained across the load resistance RL. It is not constant but pulsating (mixture of ac and dc) in nature.
- Average output in one cycle
- r.m.s. output: $\text{I}_\text{rms}=\frac{\text{I}_0}{2},\text{V}_\text{rms}=\frac{\text{V}_0}{2}$
And when the diode is reverse biased during negative half cycle of AC voltage, the p-n junction is reverse biased. The resistance of p-n junction becomes high which will be more than resistance in series. That is why, there will be voltage across p-n junction with negative cycle in output, hence option (c) is correct.
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