Zener Diode

IMPORTANT

Zener Diode: Overview

This topic covers concepts such as Zener diode, Zener diode as voltage stabiliser, and Zener breakdown.

Important Questions on Zener Diode

MEDIUM
IMPORTANT

Which of the following is/are correct

(i) The symbol  for zener diode is

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(ii) The reverse I – V characteristics of a zener diode.

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MEDIUM
IMPORTANT

The following IV characteristics. Curve is of a:

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EASY
IMPORTANT

A zener diode of power rating 1.6 W is to be used as voltage regulator. If the zener diode has a breakdown of 8 V and it has to regulate voltage fluctuating between 3 V and 10 V The value of resistance Rs for safe operation of diode will be

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EASY
IMPORTANT

What is a Zener diode?

EASY
IMPORTANT

Distinguish between Zener diode and rectifier diode.

MEDIUM
IMPORTANT

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

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MEDIUM
IMPORTANT

Consider the diagram given below

Breakdown voltage for Zener diode is 10 V. Current through the Zener diode is (consider the diodes as ideal diodes) and Zener diode operating in the breakdown region

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HARD
IMPORTANT

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In the circuit given above, what is the diode current if the unknown resistance is 5 ?

EASY
IMPORTANT

Name the semiconductor device that can be used as voltage regulator.

HARD
IMPORTANT

Consider the voltage regulation circuit shown below. The unregulated voltage varies between 9 V to 12 V.

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At what value of the unregulated voltage, the currents through the load resistor and Zener diode will be equal?

MEDIUM
IMPORTANT

Write the value of current I3 (in mA) in the circuit shown in the figure.

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EASY
IMPORTANT

The main cause of zener breakdown is

EASY
IMPORTANT

Explain zener breakdown.

EASY
IMPORTANT

In Zener diode, for currents greater than the knee current, the V-I curve is almost straight line_____ to x-axis.

EASY
IMPORTANT

Explain V-I characteristics of zener diode?

EASY
IMPORTANT

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

MEDIUM
IMPORTANT

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

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MEDIUM
IMPORTANT

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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MEDIUM
IMPORTANT

In the circuit shown in figure, Zener diode is properly biased. Power dissipated in diode (in mW) is:

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MEDIUM
IMPORTANT

In connection with the circuit drawn below, the value of current flowing through 2  resistor is x×10-4 A. The value of x is,

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