Skip to main content

What is Zener diode and There Type?


What is zener diode?
A zener diode may be a special kind of device designed to control within the zener breakdown region. Zener diodes acts like traditional p-n junction diodes underneath forward biased condition. When forward biased voltage is applied to the zener diode it allows large amount of electric current and blocks only a small amount of electric current.
Zener diode is heavily doped than the traditional p-n junction diode. Hence, it has very thin depletion region. Therefore, zener diodes allow more electric current than the normal p-n junction diodes.
Zener diode allows electric current in forward direction like a normal diode but also allows electric current in the reverse direction if the applied reverse voltage is greater than the zener voltage. Zener diode is usually connected in reverse direction because it's specifically designed to figure in reverse direction.
Zener diode definition
A zener diode may be a p-n junction semiconductor device designed to control within the reverse breakdown region. The breakdown voltage of a zener diode is carefully set by controlling the doping level throughout manufacture.
The name zener diode was named after the American physicist Clarance Melvin Zener who discovered the zener effect. Zener diodes are the essential building blocks of electronic circuits. They are widely used in all kinds of electronic equipments. Zener diodes are in the main wont to shield electronic circuits from over voltage.
Zener diodes used?
Using Zener diodes as constant-voltage diodes
The Zener voltage across a diode remains constant over a wide range of Zener current. Because of this property, Zener diodes ar wide used as constant-voltage devices.
Using Zener diodes as voltage detection devices
A Zener diode permits Zener current, Iz, to flow when the voltage is above the specified Zener voltage. Thus, a Zener diode can be used for voltage detection by sensing Zener current with some other device.
Advantages of zener diode
Power dissipation capacity is very high
High accuracy
Small size
Low cost
Applications of zener diode
It is normally used as voltage reference
Zener diodes are utilized in voltage stabilizers or shunt regulators.
Zener diodes are used in switching operations
Zener diodes are utilized in clipping and clamping circuits.
Zener diodes are used in various protection circuits
Types of Diodes
The various types of diodes are as follows:
Zener diode
Avalanche diode
Photodiode
Light Emitting Diode
Laser diode
Tunnel diode
Schottky diode
Varactor diode
P-N junction diode

Labels:

Comments

Post a Comment

Popular posts from this blog

Different types of Limit Switches

Rotary Geared Limit Switches The operating of the Limit Switch is to prevent the mechanism or drive at the intense forward/reverse positions. The Limit Switches are significantly suited to use on reversing drives like a hoist, winches, rolling mills and various other mechanisms used in steel plants such as coke ovens, feeding machinery, valve drives etc. The contacts of Limit Switches are forty amps rated ceaselessly at 500 Volts A. C. The Limit switch is often supplied with two NC contacts or four NC contacts or (2 NO + two NC) contacts as per the need. For Series Limit Switches are shields are provided. The frequency of switching of each contact is suitable for a maximum of 720 operations per hour. The speed of the driving shaft rotation shouldn't be over 60 rpm. Features:- High durable standards Optimum performance Easy to install Counter Weight Limit Switches A metal structure offers the required stability to Counter Weight Limit Switches that job on heavy c...
Post a Comment
Read more

What is MOSFETs: Types & How to MOSFET as a switch

MOSFET stands for metal-oxide-semiconductor-field-effect transistor. It is a special kind of field-effect transistor (FET). The MOSFETs could be a voltage controlled device. The MOSFET has “gate“, “Drain” and “Source” terminals rather than a “base”, “collector”, and “emitter” terminals in a very bipolar transistor. By applying the voltage at the gate, it generates AN electrical field to control the current flow through the channel between drain and supply, and there's no current flow from the gate into the MOSFET. The power MOSFETs are special to handle the high level of powers. The power MOSFETs is widely used in the n-channel enhancement mode, p-channel enhancement mode, and in the nature of n-channel depletion mode. Here we've got explained regarding the N-channel power MOSFET. Basic Statures of Power MOSFET There is three main basic status in the power MOSFETs. ·          On sate resistance ·     ...
Post a Comment
Read more

Solid State Relay AC & DC Input Circuit

Solid State Relays are semiconductor equivalents of the mechanical device relay and may be accustomed control electrical masses while not the utilization of moving parts. a normal electro-mechanical relay, SSR’s provide complete electrical isolation between their input and output contacts with its output acting as a conventional electrical switch in that it has very high, almost infinite resistance once nonconductive (open), and a really low resistance once conducting (closed). Solid State Relays can be designed to switch both AC or DC currents by using an SCR, TRIAC, or switching transistor output instead of the usual mechanical normally-open (NO) contacts. Solid State Relay DC Input Circuit When utilizing mechanical contacts, switches, push-catches, other hand-off contacts, and so forth, as the initiating signal, the supply voltage utilized can be equivalent to the SSR's base information voltage esteem, though when utilizing strong state gadgets, for example, trans...
Post a Comment
Read more