Official PYQ · 2018Set 1 · Q37Diode CircuitsNAT2 marks

GATE EC 2018 Set 1 Q37 — Diode Circuits

A $dc$ current of $26\:\mu A$ flows through the circuit shown. The diode in the circuit is forward biased and it has an ideality factor of one. At the quiescent point, the diode has a junction capacitance of $0.5\:nF$ . Its neutral region resistances can be neglected. Assume that the room temperature thermal equivalent voltage is $26\:mV$ .

For $\omega =2\times 10^{6}rad/s$ , the amplitude of the small-signal component of diode current (in $\mu A$ , correct to one decimal place) is __________.

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Answer: 6.2:6.6

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Published 10 Oct 2026

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