GATE EC||ANALOG ELECTRONIC||DIODE||PYQS(2000-2025)

For the circuit with ideal diodes shown in the figure, the shape of the output (V_out) for the given sine wave input (V_in) will be

( GATE 2015 || EC || PYQ || MCQ ||1 MARK)

An asymmetrical periodic pulse train V_in of 10 V amplitude with on-time T_ON = 1 ms and off-time T_OFF =1 μs is applied to the circuit shown in the figure. The diode D₁ is ideal.

The difference between the maximum voltage and minimum voltage of the output waveform V_o (in integer) is ____V.

( GATE 2021 || EC || PYQ || NAT ||2 MARK)

In the circuit shown below all component ideal, input voltage is sinusoidal.

         Magnitude of steady state output V_o is ___________ V.

(GATE 2020 || EC || PYQ || NAT ||1 MARK)

In the circuit shown, Vs is a 10 V square wave of period, T = 4 ms with R = 500 Ω and C = 10 μF. The capacitor is initially unchanged at t = 0, and the diode is assumed to be ideal. The voltage across the capacitor (V_C) at 3 ms is equal to …….. volts (rounded off to one decimal place).

(GATE 2019 || EC || PYQ || NAT ||2 MARK)

In the circuit shown, V_s is a square wave of period T with maximum and minimum values of 8V and -10V, respectively. Assume that the diode is ideal and
R₁ = R₂ = 50 Ω. The average value of V_L is ……… volts (rounded off to 1 decimal place).

(GATE 2019 || EC || PYQ || NAT || 1 MARK)

A DC current of 26 μA 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 ω = 2 × 10⁶ rad/s, the amplitude of the small-signal component of diode current (in μA) correct to one decimal place is ……………

(GATE 2018 || EC || PYQ || NAT || 2 MARK)

The output V₀ of the diode circuit shown in the figure is connected to an averaging DC voltmeter. The reading on the DC voltmeter in Volts, neglecting the voltage drop across the diode, is ………….

(GATE 2017 || EC || PYQ || NAT || 1 MARK)

The diodes D₁ and D₂ in the figure are ideal and the capacitors are identical. The product RC is very large compared to the time period of the ac voltage. Assuming that the diodes do not breakdown in the reverse bias, the output voltage V₀ (in volt) at the steady state is……………….

(GATE 2016 || EC ||PYQ || NAT ||1 MARK)

The figure shows a half-wave rectifier with a 475 μF filter capacitor. The load draws a constant current I₀ = 1 A from the rectifier. The figure also shows the input voltage V_i the output voltage V_c and the peak-to-peak voltage ripple u on V_c. The input voltage V_i is a triangle-wave with an amplitude of 10 V and a period of 1 ms.

(GATE 2016 || EC || PYQ || NAT ||2 MARK)

Assume that the diode in the figures has V_on = 0.7 V, but is otherwise ideal.

The magnitude of the current i₂ (in mA) is equal to ………

(GATE 2016 || EC || PYQ || NAT ||1 MARK)