EASY
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How do you find peak inverse voltage?

Important Questions on Semiconductor Devices

MEDIUM

What will be the current flowing through the 6  resistor in the circuit shown, where the breakdown voltage of the Zener is 6 V?

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MEDIUM

The value of the resistor, RS, needed in the DC voltage regulator circuit shown here, equals:

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MEDIUM

In the circuit shown, what will be the current through the 6 V zener?

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EASY
Zener breakdown occurs in a p-n junction having pand n both:
MEDIUM
Figure shows a DC voltage regulator circuit, with a Zener diode of breakdown voltage =6 V . If the unregulated input voltage varies between 10 V to 16 V, then what is the maximum Zener current?
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EASY
Zener diode is used to regulate the voltage supply because, while using a zener diode
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Take the breakdown voltage of the zener diode used in the given circuit as 6 V. For the input voltage shown in the figure below, the time variation of the output voltage is: (Graphs drawn are schematic and not to the scale)

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EASY

Consider the following statements (A) and (B) and identify the correct answer.

(A) A Zener diode is connected in reverse bias when used as a voltage regulator.
(B) The potential barrier of p-n junction lies between 0.1 V to 0.3 V.

MEDIUM
The figure represents a voltage regulator circuit using a Zener diode. The breakdown voltage of the Zener diode is 6 V and the load resistance is, RL=4 kΩ . The series resistance of the circuit is  Ri=1 kΩ . If the battery voltage VB varies from 8 V  to  16 V , what are the minimum and maximum values of the current through Zener diode?
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MEDIUM
The reverse break down voltage of a Zener diode is 5.6 V in the given circuit.
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The current Iz through the Zener is:
MEDIUM

For the circuit shown below, calculate the value of Iz:

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EASY
In the given circuit the current through zener diode is:
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EASY
A zener breakdown occurs in a zener diode when
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In case of a p-n junction diode at high value of reverse bias, the current rises sharply. The value of reverse bias is known as

EASY
For a p-n junction normal diode and a Zener diode, which of the following statements is true?
MEDIUM

The zener diode has a Vz=30 V. The current passing through the diode for the following circuit is___mA.

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EASY
In the circuit shown below, is working as a 8 V dc regulated voltage source. When 12 V is used as an input, the power dissipated (in mW ) in each diode is (Considering both zener diodes are identical) 
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EASY

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 V0 variation with input voltage linearly increasing with time, is given by (Vinput = 0 V at t = 0)

 

EASY
A Zener diode with a breakdown voltage of 4 V is connected in series with a resistance R to a battery of emf 10 V. The maximum power dissipation rating for the Zener diode is 1 W. The value of R to ensure maximum power dissipation across the diode is
MEDIUM

The 6 V Zener diode shown in the figure has negligible resistance and a knee current of 5 mA. The minimum value of R in Ω so that the voltage across it does not fall below 6 V is
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