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Semiconductor Electronics: Materials, Devices and

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Semiconductor Electronics: Materials, Devices and Class 12th

Identify the operation performed by the circuit given below:

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New question posted

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Semiconductor Electronics: Materials, Devices and Class 12th

Take the breakdown voltage of the zener diode used in the given circuit as 6 V. For the input voltage shown in figure below, the time variation of the output voltage is: (Graphs drawn are schematic and not to scale)

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a month ago

Semiconductor Electronics: Materials, Devices and Class 12th

Take the breakdown voltage of the zener diode used in the given circuit as $6 V$ . For the input voltage shown in figure below, the time variation of the output voltage is: (Graphs drawn are schematic and not to scale)

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Vishal Baghel

Contributor-Level 10

$E = (I) (t) (A) ?{c o s}^{2} ? θ?$

$\Rightarrow (3.3) [\frac{2 π}{31.4}] [3 * 10^{- 4}] * \frac{1}{2}$

$\Rightarrow 0.99 * 10^{- 4}$

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Semiconductor Electronics: Materials, Devices and Class 12th

If a semiconductor photodiode can detect a photon with a maximum wavelength of 400 $n m$ , then its band gap energy is:

Planck's constant $h = 6.63 * 10^{- 34}$ J.s.

Speed of light $c = 3 * 10^{8} m / s$

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alok kumar singh

Contributor-Level 10

Band gap energy $= \frac{h c}{λ} = \frac{1240 e V n m}{400 n m} = 3.1 e V$

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Semiconductor Electronics: Materials, Devices and Class 12th

Which of the following will NOT be observed when a multimeter (operating in resistance measuring mode) probes connected across a component, are just reversed?

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alok kumar singh

Contributor-Level 10

Multimeter will show deflection when current will flow to charge the capacitor.

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Semiconductor Electronics: Materials, Devices and Class 12th

When a diode is forward biased, it has a voltage drop of 0.5 V. The safe limit of current through the diode is 10 mA. If a battery of emf 1.5 V is used in the circuit, the value of minimum resistance to be connected in series with the diode so that the current does not exceed the safe limit is

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alok kumar singh

Contributor-Level 10

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Semiconductor Electronics: Materials, Devices and Class 12th

Identify the correct output signal Y in the given combination of gates (as shown) for the given inputs A and B.

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Vishal Baghel

Contributor-Level 10

Kindly consider the following figure

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Semiconductor Electronics: Materials, Devices and Class 12th

Two Zener diodes (A and B) having breakdown voltages of 6 V and 4 V respectively, are connected as shown in the circuit below. The output voltage V? variation with input voltage linearly increasing with time, is given by: (V_input = 0 V at t = 0) (figures are qualitative)

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Vishal Baghel

Contributor-Level 10

Till input voltage reaches 4 V. No zener is in breakdown region. So V? = V? then now hen V? changes between 4 V to 6 V one zener with 4 V will breakdown are P.D. across this zener will become constant and remaining potential will drop acro resistance in series with 4 V zener.

Now current in circuit increases Abruptly and source must have an internal resistance due to which. Some potential will get drop across the source also so correct graph between V? and t will be
We have to assume some resistance in series with source.

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Semiconductor Electronics: Materials, Devices and Class 12th

Which of the following given a reversible operation?