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In the given circuit the input voltage V in is shown in figure. The cut-in voltage of p - n junction diode ( D 1 or D 2 ) is 0 . 6 V . Which of the following output voltage V 0 waveform across the diode is correct?

Correct answer

3

Step-by-step solution

During the positive half cycle of the input waveform, diode D 1 is forward biased and diode D 2 is reverse biased. Here 0 . 6 V appears across the output as the diode is conducting. During negative half cycle the diode D 1 is reverse biased and D 2 is forward biased, so, - 0 . 6 V appears across the output as the diode is conducting in negative direction. This circuit can be used as a voltage limiter. This circuit will not allow any voltage above 0 . 6 V and below - 0 . 6 V . Hence, the output waveform is

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