Recent questions tagged diode-circuits

A Silicon PN junction at a temperature of $20^{\circ} \mathrm{C}$ has a reverse saturation current of $10$ picoAmperes $(\mathrm{pA})$. The reverse saturation current at ...

A Silicon PN junction diode under reverse bias has depletion region of width $10 \; \mu \mathrm{m}$. The relative permittivity of Silicon,$\varepsilon_{r}=11.7$ and the p...

The zener diode in the regulator circuit shown in the figure has a Zener voltage of $5.8$ volts and a Zener knee current of $0.5 \mathrm{~mA}$. The maximum load current d...

Given the ideal operational amplifier circuit shown in the figure indicate the correct transfer characteristics assuming ideal diodes with zero cut-in voltage.

A zener diode works on the principle oftunneling of charge carriers across the junctionthermionic emissiondiffusion of charge carriers across the junctionhopping of charg...

In the circuit of the given figure, assume that the diodes are ideal and the meter is an average indicating ammeter. The ammeter will read$0.4 \sqrt{2} \mathrm{~A}$$0.4 \...

A Zener diode in the circuit shown in the figure is has a knee current of $5 \mathrm{~mA}$, and a maximum allowed power dissipation of $300 \mathrm{~mW}$. What are the mi...

The values of voltage $\left(\mathrm{V}_{\mathrm{D}}\right)$ across a tunnel-diode corresponding to peak and valley currents are $\text{V}_{\text{P}}$ and $\text{V}_{\tex...

In the circuit shown below, the switch wa connected to position $1$ at $t<0$ and at $t=0$, it is changed to position $2$. Assume that $y$ the diode has zero voltage drop ...

Find the correct match between Group $1$ and Group $2$$$\begin{array}{ll}\qquad \textbf{Group 1} & \qquad \textbf{Group 2} \\\text{E. Varactor diode} & \text{1. Voltage r...

For the circuit shown below, assume that the zener diode is ideal with a breakdown voltage of $6$ Volts. The waveform observed across $R$ is

The forward dynamic resistance of a junction diode varies ________ as the forward current.

In the output stage of a standard $\text{TTL}$, have a diode between the emitter of the pull-up transistor and the collector of the pull-down transistor. The purpose of t...

In a $p^{+} n$ junction diode under reverse bias, the magnitude of electric field is maximum atthe edge of the depletion region on the $p$-sidethe edge of the depletion r...

The correct full wave rectifier circuit is

Group I lists four types of $p-n$ junction diodes. Match each device in Group I with one of the options in Group II to indicate the bias condition of that device in its n...

Group I lists four different semiconductor devices. Match each device in Group I with its characteristic property in Group II.$$\begin{array}{ll} \textbf{Group I} & \qqua...

In the $\text{Op-Amp}$ circuit shown, assume that the diode current follows the equation $I=I_{S} \exp \left(V / V_{T}\right)$. For $V_{i}=2 \mathrm{~V}, V_{o}=V_{o 1},$ ...

For the Zener diode shown in the figure, the Zener voltage at knee is $7 \mathrm{~V}$, the knee current is negligible and the Zener dynamic resistance is $10 \; \Omega$. ...

In the following limiter circuit, an input voltage $V_{i}=10 \sin 100 \pi t$ is applied. Assume that the diode drop is $0.7 \mathrm{~V}$ when it is forward biased. The Ze...

Consider the following circuit using an ideal $\text{OPAMP}$. The $\text{I-V}$ characteristics of the diode is described by the relation $I=I_{0}\left(e^{\frac{V}{V_{T}}}...

Consider the following assertions.$\text{S1:}$ For Zener effect to occur, a very abrupt junction is required.$\text{S2:}$ For quantum tunneling to occur, a very narrow en...

Consider the circuit shown in the figure is If the diode used here has the V-I characteristic as in the figure is then the output waveform $v^{0}$ is

In the circuit below, the diode is ideal. The voltage $V$ is given by$\min \left(V_{i}, 1\right)$$\max \left(V_{i}, 1\right)$$\min \left(-V_{i}, 1\right)$$\max \left(-V_{...

The transfer characteristic for the precision rectifier circuit shown below is (assume ideal $\text{OP-AMP}$ and practical diodes)

A $\text{P-N}$ junction series with a $100$ ohms resistor, is forward based so that a current of $100 \mathrm{~mA}$ flows. If the voltage across this combination is inst...

The $6 \mathrm{~V}$ Zener diode shown in given figure has zero Zener resistance and a knee current of $5 \mathrm{~mA}$. The minimum value of $R$ so that the voltage acros...

The small signal capacitances of an abrupt $P_1-n$ junction is $1 \mathrm{nF} / \mathrm{Cm}^2$ at zero bias. If the built in voltage is $1$ volt, the capacitance at a rev...

In figure the input $V_1$ is a $100 \mathrm{~Hz}$ triangular wave having a peak to peak amplitude of 2 volts and an average value of zero volts. Given that the diode is i...