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JEE Main 2022 (28 Jun, Shift 2) · P-N Junction Diode

P-N Junction Diode question from JEE Main 2022 (28 Jun, Shift 2)

Q69JEE Main 2022 · 28 JUN · SHIFT 2Difficult

P-N Junction Diode

In the given circuit the input voltage Vin is shown in figure. The cut-in voltage of p-n junction diode (D1 or D2) is 0.6 V. Which of the following output voltage (V0) waveform across the diode is correct?

Figure

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Answer: (d)

  1. D1D_1 and D2D_2 are in parallel with opposite orientation across the output.
  2. Positive half: one diode turns on once Vin>0.6V_{in} > 0.6 V, so V0V_0 is clipped at +0.6+0.6 V.
  3. Negative half: the other diode turns on, so V0V_0 is clipped at −0.6-0.6 V.
  4. Output follows the input up to ±0.6\pm 0.6 V and is flat beyond it. So the answer is (d).
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