Question
For the given circuit (shown in part ) the time dependent input voltage $v_{\text{in}\text{~}}(t)$ and corresponding output $v_{o}(t)$ are shown in part (B) and part (C), respectively.
Identify the components that are used in the circuit between
points X and Y .
,
Options
Solution
Sol. [Key Concept: Trace forward/reverse bias in each half-cycle to match the clipped output waveform.]
For the +ve half cycle of input
Middle branch has ideal diode in forward bias and Zener diode in reverse bias Thus, we get constant 5 V output due to Zener breakdown. For this situation component between $x\& y$ should act as open circuit.
For -ve half cycle of input
middle branch has ideal diode in reverse bias, which makes it open branch without any current. for this situation component between $x\& y$ should give a constant -5 V output due to Zener breakdown.
(Note : The input side must contain some resistance else $V_{\text{in}\text{~}}$ is equal to $V_{\text{out}\text{~}}$ for every cases)
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