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GATE ECE 2001 | Question: 6

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For the circuit shown in the figure. $D_{1}$ and $D_{2}$ are indentical diodes with ideality factor of unity. The thermal voltage $V_{T}=25 \; \mathrm{mV}$.

  1. Calculate $\mathrm{V}_{f}$ and $\mathrm{V}_{r}.$
  2. If the reverse saturation current, $I_{s}$, for the diode is $1 \; \mathrm{pA}$, then compute the current $\text{I}$ through the circuit.

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