Advertisements
Advertisements
प्रश्न
Draw the I − V characteristics of zener diode and explain briefly how reverse current suddenly increase at the breakdown voltage.
Advertisements
उत्तर
I − V characteristics of Zener diode,
Reverse current is due to the flow of electrons from n → p and holes from p → n. As the reverse biased voltage increase the electric field across the junction becomes significant. And when reverse bias voltage V = VZ, then the electric field strength is high enough to pull electrons from p-side and accelerated to n-side.
संबंधित प्रश्न
What is Zener diode?
Describe briefly with the help of a circuit diagram how a zener diode works to obtain a constant dc voltage from the unregulated dc output of a rectifier ?
Draw labelled graphs showing the input and output voltages.
Electronic motors operating at low voltages tend to burn out because
For a chosen non-zero value of voltage, there can be more than one values of current in
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 the p-n junction lies between 0.1 V to 0.3 V.
Consider the following statements (A) and (B) and identify the correct answer.
- A zener diode is connected in reverse bias, when used as a voltage regulator.
- The potential barrier of p-n junction lies between 0.1 V to 0.3 V.
For the circuit shown below, calculate the value of Iz ______.
In connection with the circuit drawn below, the value of current flowing through 2 kΩ resistor is ______ × 10-4 A.
The reverse breakdown voltage of a Zener diode is 5.6 V in the given circuit.
The current Iz through the Zener is ______.
