Diode Circuits and Applications · Analog Electronics · GATE EE

Marks 1

In the linear regulator circuit shown, the base to emitter voltage $V_{B E}$ of the BJT is 0.6 V . The Zener diode clamps the base voltage to 5.4 V . Ignore the biasing current of the Zener diode and BJT. The maximum possible efficiency of the regulator circuit is

$\_\_\_\_$ % (Round off to one decimal place)

GATE EE 2026

For the circuit shown below with ideal diodes, the output will be

GATE EE 2022

In the circuit shown, a 5 V Zener diode is used to regulate the voltage across load $R_0$. The input is an unregulated DC voltage with a minimum value of 6 V and a maximum value of 8 V . The value of $R_s$ is $6 \Omega$. The Zener diode has a maximum rated power dissipation of 2.5 W . Assuming the Zener diode to be ideal, the minimum value of $R_0$ is $\_\_\_\_$ $\Omega$.

GATE EE 2021

In the circuit shown, the input $V_i$ is a sinusoidal AC voltage having an rms value of $230 \mathrm{~V} \pm 20 \%$. The worst case peak-inverse voltage seen across any diode is $\_\_\_\_$ V. (Round off to 2 decimal places)

GATE EE 2021

For the circuit shown in the figure below, assume that diodes $${D_1},\,{D_2}$$ and $${D_3}$$ are ideal.

The $$DC$$ components of voltages $${v_1}$$ and $${v_2},$$ respectively are

GATE EE 2017 Set 1

In the following circuit, the input voltage $${V_{in}}$$ is $$100\sin \left( {100\pi t} \right).$$ For $$100\pi RC = 50,$$ the average voltage across $$R$$ (in volts) under steady-state is nearest to

GATE EE 2015 Set 2

The sinusoidal ac source in the figure has an rms value of $${{20} \over {\sqrt 2 }}\,V.$$ Considering all possible values of $${R_L},\,\,$$ the minimum value of $${R_s}$$ in $$\Omega $$ to avoid burnout of the Zener diode is ______.

GATE EE 2014 Set 2

The figure shows the circuit of a rectifier fed from a 230 V (rms), 50Hz sinusoidal voltage source. If we want to replace the current source with a resistor so that the rms value of the current supplied by the voltage source remains unchanged, the value of the resistance (in ohms) is __________ (Assume diodes to be ideal)

GATE EE 2014 Set 1

The $$i$$-v characteristics of the diode in the circuit given below are $$$i = \left\{ {\matrix{ {{{v - 0.7} \over {500}}A,} & {v \ge 0.7\,V} \cr {0A,} & {v < 0.7\,V} \cr } } \right.$$$

The current in the circuit is

GATE EE 2012

Assuming that the diodes an ideal in the given circuit, the voltage $${V_0}$$ is

GATE EE 2010

The following circuit has a voltage source $${V_s}$$ as shown in the graph. The current through the circuit is also shown

GATE EE 2009 Analog Electronics - Diode Circuits and Applications Question 13 English 1

GATE EE 2009 Analog Electronics - Diode Circuits and Applications Question 13 English 2

The element connected between $$' a '$$ and $$' b '$$ could be

GATE EE 2009

The equivalent circuits of a diode, during forward and reverse biased conditions are shown in figure.
(a)

GATE EE 2008 Analog Electronics - Diode Circuits and Applications Question 16 English 1

(b)

If such diodes are used in the clipper circuit of figure given above, the output voltage (V₀) of the circuit will be

GATE EE 2008

What are the states of the three ideal diodes of the circuit shown in figure?

GATE EE 2006

Assume that $${D_1}$$ and $${D_2}$$ in figure are ideal diodes the value of current $${I_s}$$ is

GATE EE 2005

The current through the zener diode in the given circuit is

GATE EE 2004

The forward resistance of the diode shown in figure is $$5\Omega $$ and the remaining parameters are same as those of ideal diode. The $$DC$$ component of the source current is

GATE EE 2002

The cut in voltage of both Zener diode $${D_z}$$ and diode $$D$$ shown in Figure is $$0.7$$ $$V,$$ while break down voltage of the zener is $$3.3$$ $$V$$ and reverse breakdown voltage of $$D$$ is $$50$$ $$V.$$ the other parameters can be assumed to be the same as those of an ideal diode. The values of the peak output voltage ($${V_0}$$) are

GATE EE 2002

As temperature is increased, the voltage across a diode carrying a constant current.

GATE EE 1999

The colour code of a $$1k\Omega $$ resistance is

GATE EE 1999

The mobility of an electron in a conductor expressed in terms of

GATE EE 1999

In the following circuit the $$5$$ $$V$$ zener diode requires a minimum current of $$10$$ $$mA.$$ For obtaining a regulated output of $$5V,$$ the maximum permissible load current $$\left( {{{\rm I}_L}} \right)$$, is ______$$mA$$ and the minimum power rating of zener diode is ________ $$W$$.

GATE EE 1992

Marks 2

In the given circuit, the diodes are ideal. The current I through the diode D1 in milliamperes is _____ (rounded off to two decimal places).

GATE EE 2024

All the elements in the circuit shown in the following figure are ideal. Which of the following statements is/are true?

GATE EE 2023

The Zener diode in circuit has a breakdown voltage of 5 V. The current gain $$\beta$$ of the transistor in the active region in 99. Ignore base-emitter voltage drop $$V_{BE}$$. The current through the 20 $$\Omega$$ resistance in milliamperes is ___________ (Round off to 2 decimal places).

GATE EE 2023

The waveform shown in solid line is obtained by clipping a full-wave rectified sinusoid (shown dashed). The ratio of the rms value of the full-wave rectified waveform to the rms value of the clipped waveform is $\_\_\_\_$ . (Round off to 2 decimal places,)