Zener Diode-Zener Diode as a Voltage Regulator
Zener Diode-Zener Diode as a Voltage Regulator: Overview
This topic covers concepts, such as, Zener Diode, Zener Diode as Voltage Stabiliser, V-I Characteristics of a Zener Diode & Field Ionisation etc.
Important Questions on Zener Diode-Zener Diode as a Voltage Regulator
Which of the following is/are correct
(i) The symbol for zener diode is
(ii) The reverse I – V characteristics of a zener diode.

The following characteristics. Curve is of a:

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

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

Figure shows a voltage regulator circuit, with a Zener diode of breakdown voltage . If the unregulated input voltage varies between to then what is the maximum Zener current?

For the circuit shown below, the current (in ) through the Zener diode is

A Zener diode, having breakdown voltage equal to , is used in a circuit shown in the figure. If the applied voltage is , the current through the Zener diode is . The value of is

What is the order of the reverse saturation current before breakdown in a zener diode?

Identify characteristics are given below, in the order (i), (ii), (iii), (iv):
i. ii.
iii. iv.

The reading corresponding to zener diode are given below in the table. From given table, determine the reverse breakdown voltage of the zener diode.
Forward bias | Reverse bias | ||
(volt) | (volt) | ||

In the previous question, if applied voltage is volt, then the current flowing through the zener diode will be:

In the figure shown, the currents through the zener diode and load resistance are respectively

A Zener diode, having breakdown voltage equal to is used in a voltage regulator circuit shown in the figure. The current through the diode is :

In a zener regulated power supply of a zener diode with is used for regulation. The load current is to be and the unregulated input is . The value of series resistor is

A zener diode provides voltage to load resistance If current by battery may vary from to what should be the value of

The emission of electrons from the host atoms due to the high electric field in a zener diode is known as

Field ionisation is also known as:

Consider a Zener diode connected in reverse bias with a battery and a resistor in series. If the breakdown voltage of the diode is , then find the current flowing through the Zener in :

Which of the following is an application of Zener diode ?

Among the following, the one that is showing the characteristics of a Zener diode is
