In the given circuit the input voltage $\mathrm{V}_{\text {in }}$ is shown in figure. The cut-in voltage of $\mathrm{p}-\mathrm{n}$ junction diode ( $\mathrm{D}_{1}$ or $\mathrm{D}_{2}$ ) is 0.6 V. Which of the following output voltage ( $\mathrm{V}_{0}$ ) waveform across the diode is correct?

JEE Main · 2022 · 28 Jun 2022 · Shift 2 · Semiconductors

In the given circuit the input voltage

V_{in}

is shown in figure. The cut-in voltage of

p - n

junction diode (

D_{1}

D_{2}

) is 0.6 V. Which of the following output voltage (

V_{0}

) waveform across the diode is correct?

Answer: (D)

During the positive half cycle of input:

During the negative half cycle:

$D_{2}$ is forward biased, $D_{1}$ is reverse biased
For $V_{in}$ from 0 to -0.6 V: $D_{2}$ does not conduct, so $V_{o u t} = V_{in}$
For $V_{in} < - 0.6$ V: $D_{2}$ conducts, $V_{o u t}$ is clamped at -0.6 V

This creates a clipped waveform at ±0.6 V, which matches option (D).

JEE Main · 2022 · 28 Jun 2022 · Shift 2 · Single correct option