Zener diode Operation and Applications | ECE Tutorials

 

applications of zener diode

Jun 08,  · Zener diode is a specially doped special typer of diodes used in various applications in electronics circuits mainly it provides stable voltage output across the circuit terminals across which the Zener diode is connected. Applications of Zener Diode. Among numerous uses, let us discuss some crucial applications of zener diode: In voltage regulation: Regulating the voltage of a circuit is its ability to keep the output voltage fixed regardless of the variation in input voltage or load ayungs.tk: Roshni Y. The symbol of Zener diode is shown in the figure below. Operation of Zener diode. The VI characteristics of a zener diode is as shown in the figure below. The forward characteristics of zener diode are similar to that of normal PN junction diode. The reverse breakdown region is the VI characteristic of Zener diode above zener breakdown voltage.


Zener Diode Working with Circuit Diagram and applications


Zener diode is a junction formed by combining highly doped PN semiconductors. It works on the principle of Zener breakdown and is operated in reverse breakdown region. In reverse breakdown region high current flow through the diode leading to high power dissipation.

Hence the Zener diodes are provided with adequate power dissipation capabilities to operate in reverse breakdown region. Zener Breakdown, applications of zener diode. When a reverse bias is applied across the diode electric field is generated by uncovered charges at the depletion region, applications of zener diode. The electric field intensity across a PN junction diode increases as doping level are increased.

N D is Donor concentration, applications of zener diode. W is width of depletion region. Accordingly the electric filed at the junction formed by heavily doped PN semiconductors exerts a sufficiently strong force on a bound electron enough to tear it out of its covalent bond. The new hole electron pair created increases reverse current and eventually enters breakdown region. This process is called Zener breakdown. Symbol of Zener diode.

Z ener diode as the name suggests is a two terminal device with two terminals being anode p and cathode applications of zener diode. The symbol of Zener diode is shown in the figure below. Operation of Zener diode. The VI characteristics of a zener diode is as shown in the figure below. The forward characteristics of zener diode are similar to that of normal PN junction diode.

The reverse breakdown region is the VI characteristic of Zener diode above zener breakdown voltage. In reverse breakdown region the reverse voltage across the diode is almost independent of the current flowing through it except for small variation quantified by dynamic resistance of Zener diode.

That means if we connect a load across the zener diode with a resistance and supply voltage it will provide almost constant voltage across the load independent of load and supply voltage variations. This means Zener diode acts as a voltage regulator.

The minimum current that should be allowed through zener diode to ensure that it is in breakdown region is called Knee current. For currents lower than the knee current regulation will be poor. Your email address will not be published. Zener Breakdown When a reverse bias is applied across the diode electric field is generated by uncovered charges at the depletion region. Symbol of Zener diode Z ener diode as the name suggests is a two terminal device with two terminals being anode p and cathode n.

Applications of zener diode symbol of Zener diode is shown in the figure below Operation of Zener diode The VI characteristics applications of zener diode a zener diode is as shown in the figure below The forward characteristics of zener diode are similar to that of normal PN junction diode, applications of zener diode. They are used as Reference elements. Used in switching applications. Leave a Reply Cancel reply Your email address will not be published.

 

Zener diode - Wikipedia

 

applications of zener diode

 

The symbol of Zener diode is shown in the figure below. Operation of Zener diode. The VI characteristics of a zener diode is as shown in the figure below. The forward characteristics of zener diode are similar to that of normal PN junction diode. The reverse breakdown region is the VI characteristic of Zener diode above zener breakdown voltage. Applications of Zener Diode. Among numerous uses, let us discuss some crucial applications of zener diode: In voltage regulation: Regulating the voltage of a circuit is its ability to keep the output voltage fixed regardless of the variation in input voltage or load ayungs.tk: Roshni Y. Applications of Zener Diodes Zener diodes finds a wide applications commercially and industrially. Some of the important applications of a Zener Diodes are – as a Voltage Regulator or Stabilizer, as a Meter Protector and as a Wave ayungs.tk are discussed below in detail.