Compare P-N junction and Zener Diode.

Compare P-N junction and Zener Diode.
by

1 Answer

Answer :

P-N junction
Zener Diode
It conducts in only in one direction. 
It conducts in both the directions.
It is always operated in forward bias condition.
It is always operated in reverse bias condition.
It has no sharp reverse breakdown
It has quite sharp reverse breakdown
It burns immediately, if applied voltage exceeds the breakdown voltage.
It does not burn, but functions properly in breakdown region. 
It is commonly used for rectification purpose.
It cannot be used for rectification, but commonly used for voltage regulation
image
image
by

Related questions

List four specifications of zener diode or P- N junction diode.

Description : List four specifications of zener diode or P- N junction diode.

Last Answer : Specifications of zener diode: 1. Zener voltage 2. Power dissipation 3. Maximum power dissipation PD(max) 4. Breakdown current 5. Dynamic resistance 6. Maximum reverse current. (OR) ... Reverse saturation current 5. Power dissipation 6. Junction temperature 7. Peak inverse voltage (PIV)

Write two applications of P-N junction diode and zener diode.

Description : Write two applications of P-N junction diode and zener diode. 

Last Answer : Application of P-N junction diode: Used in rectifier circuit Used in clipping and clamping circuit. Used for A.M detection Used for voltage multiplier. Application of Zener diode: It is ... . Used in protection circuits for MOSFET. Used in pulse amplifier. Used in clipping circuits.

Draw and explain V-I characteristics of a P-N junction diode.

Description : Draw and explain V-I characteristics of a P-N junction diode.

Last Answer : V-I Characteristics of a P-N junction: V-I characteristics of a Diode: The V-I characteristics can be divided in two parts. 1. Forward characteristics. 2. Reverse ... plot a graph with reverse voltage on horizontal axis and current on vertical axis, we obtain reverse characteristics.

Draw V-I characteristics of p-n junction diode? Define static and dynamic resistance of diode.

Description : Draw V-I characteristics of p-n junction diode? Define static and dynamic resistance of diode.

Last Answer : Static Resistance: The resistance offered by a p-n junction diode when it is connected to a DC circuit is called static resistance.  (OR) It is the ratio of DC voltage applied across diode ... The dynamic resistance of a diode is the ratio of change in voltage to the change in current. 

Describe avalanche and zener breakdown of PN junction with neat graph.

Description : Describe avalanche and zener breakdown of PN junction with neat graph.

Last Answer : Avalanche Breakdown It is observed in diodes having Vz> 8V. is called Avalanche Breakdown It occurs due to accelerating minority carriers. It shows gradual change. Breakdown voltage ... field. Breakdown is very sharp. Breakdown voltage decreases with increase in temperature 

Draw symbol and state one application of zener diode and LED.

Description : Draw symbol and state one application of zener diode and LED.

Last Answer : Diagram: Application of Zener diode:  It is used as voltage regulator. Used in protection circuits for MOSFET. Used in pulse amplifier. Used in clipping circuits. ... alarm systems 7-segment, 16- segment and dot matrix displays Indicating power ON/OFF conditions

Draw and describe the VI characteristics of zener diode

Description : Draw and describe the VI characteristics of zener diode

Last Answer : A zener diode is operated only in the reverse-bias region. (generally written as VR) is increased, the reverse current (usually called zener current, IZ) remains negligibly small up to ... out of the breakdown region, when the applied reverse voltage is reduced below the breakdown voltage.  

Compare avalanche and zener breakdown.

Description : Compare avalanche and zener breakdown.

Last Answer : Sr. No. Avalanche breakdown Zener breakdown 1 PN junction are lightly doped in avalanche breakdown PN junction are heavily doped in zener breakdown 2 The avalanche breakdown ... 4 Electron hole pairs are generated  Large number of holes and electrons are produced 

State any Four applications of PN junction diode.

Description : State any Four applications of PN junction diode.

Last Answer : 1. Rectifiers in power supplies, 2. Detectors in RF, 3 .Clippers, 4. In clamping networks used as DC Restorers, 5. As switches in digital logic circuits.

Describe the working of PN junction diode with neat sketch under forward biased condition.

Description : Describe the working of PN junction diode with neat sketch under forward biased condition.

Last Answer : If the p-region (anode) is connected to the positive terminal of the external DC source and nside (cathode) is connected to the negative terminal of the DC source then the biasing ... The large number of majority carriers crossing the junction constitutes a current called as the forward current.

Compare ; i) Active n/w and passive n/w ii) Bilateral n/w and unilateral n/w

Description : Compare ; i) Active n/w and passive n/w ii) Bilateral n/w and unilateral n/w

Last Answer : i) Active n/w and passive n/w  Sr.No. Active n/w Passive n/w 1 It is a network which contains active elements. It is a network which does not contains active elements or ... allows the current to flow only in one direction. 2 Eg: transmission line Eg: Diode rectifier

Which of the following is used for regulated electric supply? (1) Zener diode (2) Junction diode (3) Gun diode (4) Tunnel diode

Description : Which of the following is used for regulated electric supply? (1) Zener diode (2) Junction diode (3) Gun diode (4) Tunnel diode

Last Answer : (1) Zener diode Explanation: The Zener diode is like a generalpurpose signal diode. When based in the forward direction it behaves just like a normal signal diode, but when a reverse voltage ... property. Many diodes described as "Zener" diodes rely instead on avalanche breakdown as the mechanism.

Which of the following is used for regulated electric supply ? (1) Zener diode (2) Junction diode (3) Gun diode (4) Tunnel diode

Description : Which of the following is used for regulated electric supply ? (1) Zener diode (2) Junction diode (3) Gun diode (4) Tunnel diode

Last Answer : Zener diode

Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode.

Description : Explain with neat sketch construction of PIN Diode. Draw its characteristics in reverse bias mode. 

Last Answer : Construction A PIN diode is made up of three semiconductor materials; two heavily doped P- and N- type material separated by an intrinsic (undoped) semiconductor (I) as shown in above figure ... . This advantage allows the PIN diode to process even weak signals.  Characteristics

State four applications of PIN diode.

Description : State four applications of PIN diode. 

Last Answer : i. Used in rectifier circuit. ii. Used in clipping and clamping circuit. iii. Used for A.M detection. iv. Used for voltage multiplier.

Draw the clipper circuit using series and shunt diode.

Description : Draw the clipper circuit using series and shunt diode.

Last Answer : Fig: A series negative clipper (OR) Fig: Series positive clipper Fig: Parallel positive clipper (OR) Fig: Parallel negative clipper

State the working principle of LED and LASER diode.

Description : State the working principle of LED and LASER diode.

Last Answer : LED  Working principle of LED diode:An LED emits two light when electrical energy is applied to it.LED is a two terminal device.The terminals are named as anode (A) and the other as cathode(K). A ... with light: 1) Light absorption 2) Spontaneous emission 3) Stimulated emission

Describe the operating principle of PIN diode with neat sketch.

Description : Describe the operating principle of PIN diode with neat sketch.

Last Answer : Consider the structure of a PIN diode as shown in fig  A PIN diode operates under what is known as high-level injection.In other words,the intrinsic i region is flooded with charge ... results in faster operation of the diode,making it a suitable device for high frequency operations.

Draw the characteristics of tunnel diode and write two applications of it.

Description : Draw the characteristics of tunnel diode and write two applications of it.

Last Answer :  Characteristics:  Applications: 1. In the digital networks 2. As a high speed switch 3. As a high frequency oscillator 4. High speed computers

Draw the characteristics of tunnel diode, showing operating regions. State two applications of tunnel diode.

Description : Draw the characteristics of tunnel diode, showing operating regions. State two applications of tunnel diode.

Last Answer : Applications: One of the important application of a tunnel diode is in high speed computers where the switching times in the order of nanoseconds or picoseconds are desirable. A tunnel diode can be ... In digital networks. 2. As a high speed switch. 3. As a high frequency oscillator.

Define dynamic resistance of diode. State, how it is calculated using forward characteristics of diode.

Description : Define dynamic resistance of diode. State, how it is calculated using forward characteristics of diode.

Last Answer : Definition: The resistance offered by the diode to the AC operating conditions is known as the Dynamic resistance' or Incremental resistance' or AC resistance' of a diode. It is ... Dynamic resistance is actually the reciprocal of the slope of the forward characteristics.

List applications of Schottky diode and Laser diode.

Description : List applications of Schottky diode and Laser diode.

Last Answer : Application of Schottky diode:  It is used in rectification of very high frequency signals. It is used in communication system circuits. It is used in AC to DC converters. It is used in Radar ... etc. It is used in welding. It is used as a light source in fibre optic communication.

Draw construction of Schottky diode and state it’s four applications.

Description : Draw construction of Schottky diode and state it’s four applications.

Last Answer : Applications :- 1. RF mixer and detector diode: 2. Power rectifier 3. Voltage clamping 4. Stand alone photovoltaic systems in order to prevent batteries from discharging purpose for the solar panels at night 5. Rectifiers in power supplies.

Draw symbol of (i) Tunnel diode (ii) LED

Description : Draw symbol of (i) Tunnel diode (ii) LED

Last Answer : (i) Tunnel diode: (ii) LED:

Describe the working principle of Laser Diode.

Description : Describe the working principle of Laser Diode.

Last Answer : When the P-N junction of a laser diode is forward-biased by an external voltage source, electrons move across the junction and recombination occurs in the depletion region which results in the ... point, a strong beam of laser light comes out of the partially reflective surface of the diode.

Define given parameters and state their values for bridge rectifier (i) Ripple factor (ii) PIV of diode.

Description : Define given parameters and state their values for bridge rectifier (i) Ripple factor (ii) PIV of diode.

Last Answer : Ripple Factor: Ripple Factor is defined as the ratio of RMS value of the AC component of output to the DC or average value of the output. Mathematically it is expressed as, ( ... which appears across non-conducting reverse biased diode. (ii) PIV of diode for bridge rectifier-Vm

Define static and dynamic resistance of diode.

Description : Define static and dynamic resistance of diode.

Last Answer : Static resistance (Rf) :Static Resistance of a P-N junction diode is the ratio of forward voltage to forward current.   Dynamic Resistance (rf): Dynamic Resistance of a P-N junction diode ... small change in forward voltage to small change in forward current at a particular operating point.  

Describe the operating principle of LASER diode with diagram.

Description : Describe the operating principle of LASER diode with diagram.

Last Answer : Operating Principle: There are three main processes in semiconductors that are associated with light: Light absorption Spontaneous emission Stimulated emission Stimulated emission is ... LASER special properties such as narrow spectral width and coherent output radiation. 

List any two applications of photo diode and IRLED

Description : List any two applications of photo diode and IRLED 

Last Answer : Photodiode 1. In the cameras for sensing the light intensity. 2. In CD players. 3. In the fiber optic receiver. 4. As photo (light) detector. 5. In light intensity meters. 6. In the ... shaft encoders 4. As a light source in optical fiber system 5. In the burglar alarm system.

List any two applications of Schottkey diode.

Description : List any two applications of Schottkey diode.

Last Answer : Application of Schottky diode: • It is used in rectification of very high frequency signals. • It is used in communication system circuits. • It is used in AC to DC converters. • It is used in Radar system. • It is used in switched mode power supply. 

List any four applications of laser diode.

Description : List any four applications of laser diode.

Last Answer : 1. As light source in fiber optic communication. 2. In the infrared spectrometers. 3. In the medical field. 4. In military applications. 5. To measure distance, alignment angle etc. 6. For flow ... . 9. For welding. 10. For sound recording and reproduction (in CD players) 11. In holography.

Describe working of schottky diode with neat construction

Description : Describe working of schottky diode with neat construction

Last Answer : Applications: 1) RF mixer and Detector Diode. 2) Power Rectifier 3) Voltage Clamping 4) Stand-alone photovoltaic system in order to prevent batteries from discharging purpose for the ... . 7) Low Voltage Power Supply Circuits. 8) To rectify very high frequency signals.

Draw VI characteristics of Tunnel diode & describe it.

Description : Draw VI characteristics of Tunnel diode & describe it.

Last Answer : Symbol of TUNNEL DIODE operating principle of tunnel diode Working  The operation of tunnel diode is based on special characteristics known as negative resistance. The width of the ... tunneling & hence the name of the high impurity density PN junction is called as tunnel diode.

Compare: 1. Active and passive network 2. Linear and non-linear network

Description : Compare: 1. Active and passive network 2. Linear and non-linear network

Last Answer : 1. Active network and passive network. Sr.No Active network Passive network 1 If a network consists of an energy source, then it is called as an active network. If ... only to the linear networks.  The superposition theorem also is not applicable to the nonlinear networks.

Compare clipper and clamper

Description : Compare clipper and clamper

Last Answer : Sr. No Parameter Clipper Clamper 1 Components used Diode, Resistors  Diode, Capacitors, Resistors 2 Function To remove a part of input waveform To add a DC ... Application Diode clamp, wave shaping circuits  Voltage Multipliers  5 Configuration

Compare Integrator and differentiator.

Description : Compare Integrator and differentiator.

Last Answer : Sr. No. Integrator Differentiator 1 A circuit that gives an output voltage directly proportional to the integral of its input is known as an integrating circuit. A circuit that gives an output voltage directly ... is a low pass filter. It is a high pass filter. 5

Compare linear and nonlinear wave shaping circuits.

Description : Compare linear and nonlinear wave shaping circuits.

Last Answer : Sr. No. Linear Wave shaping Circuit Non Linear Wave shaping Circuits 1 The circuit which makes use of only linear circuit elements is known as linear wave shaping circuits. The circuit which ... for the circuits 4 E.g. Integrator, Differentiator E.g. Clipper, Clamper

Compare half wave rectifier and full wave rectifier.

Description : Compare half wave rectifier and full wave rectifier. 

Last Answer : half wave rectifier and full wave rectifier :

Compare linear and logarithmic potentiometer.

Description : Compare linear and logarithmic potentiometer. 

Last Answer : Sr. No. Linear Potentiometer Logarithmic Potentiometer 1 It has a linear variation of resistance with each degree of rotation of its shaft. It has a ... user control uses linear potentiometers Logarithmic potentiometers are often used in connection with audio amplifiers.

Compare soft magnetic materials and hard magnetic materials.

Description : Compare soft magnetic materials and hard magnetic materials.

Last Answer : Sr. No. Soft magnetic materials  Hard magnetic materials  1 It has high resistivity It has low resistivity 2 It has low coercivity It has high coercivity 3 It has ... It has high residual magnetism 4 It is easily magnetized It is not easily magnetized.

Compare RC integrator with RC differentiator

Description : Compare RC integrator with RC differentiator

Last Answer : Compare RC integrator with RC differentiator

The waveform of a certain signal can be studied by – (1) Spectrometer (2) Cathode ray oscilloscope (3) p - n junction diode (4) Sonometer

Description : The waveform of a certain signal can be studied by – (1) Spectrometer (2) Cathode ray oscilloscope (3) p - n junction diode (4) Sonometer

Last Answer : (4) Sonometer Explanation: A spectrometer is an instrument used to measure properties of light over a specific portion of the electromagnetic spectrum. Cathode ray oscilloscope is an electronic display ... electron beam that is used to produce visible patterns or graphs on a phosphorescent screen.

On increasing the reverse bias to a large value in a p-n junction diode current (a) Increases slowly (b) Remains fixed (c) Suddenly increases (d) Decreases slowly

Description : On increasing the reverse bias to a large value in a p-n junction diode current (a) Increases slowly (b) Remains fixed (c) Suddenly increases (d) Decreases slowly

Last Answer : (c) Suddenly increases

Which is the most important building block of electronic devices? (a) Diode (b) p-n junction (c) transistor (d) rectifier

Description : Which is the most important building block of electronic devices? (a) Diode (b) p-n junction (c) transistor (d) rectifier

Last Answer : b) p-n junction

A semiconductor device made up of a single p-n Junction is called a: w) transistor x) diode y) Fet z) integrated circuit

Description : A semiconductor device made up of a single p-n Junction is called a: w) transistor x) diode y) Fet z) integrated circuit

Last Answer : ANSWER: X -- DIODE

The waveform of a certain signal can be studied by (1) Spectrometer (2) Cathode ray oscilloscope (3) p – n junction diode (4) Sonometer

Description : The waveform of a certain signal can be studied by (1) Spectrometer (2) Cathode ray oscilloscope (3) p – n junction diode (4) Sonometer

Last Answer : Sonometer

applications of P-N junction diode

Description :  applications of P-N junction diode

Last Answer : 1.It is used as rectifier in DC power supply 2.It is used as free wheel diode across relay or inductive load 3.It is used as switch in logic circuits used in computers 4.It is used as detector in demodulation circuits of communication receiver 

Define i)P-N junction diode ii) Depletion layer iii)Forward bias iv)Reverse bias of P-N junction diode

Description : Define i)P-N junction diode ii) Depletion layer iii)Forward bias iv)Reverse bias of P-N junction diode

Last Answer : i)P-N junction diode: It is a semiconductor device in which half of its region is P-type and other half is N-type.  ii) Depletion layer: The region where free electrons and free holes are absent ... and negative terminal is connected to p-side of p-n junction diode, it is said to be reverse bias.

Explain the forward bias characteristics of a P-N Junction diode.

Description : Explain the forward bias characteristics of a P-N Junction diode. 

Last Answer : forward and reverse characteristics of P-N junction diode.

The region consisting of holes and electrons near the p-n junction of a diode is

Description : The region consisting of holes and electrons near the p-n junction of a diode is (A) diffusion region (B) neutral zone (C) recombination region (D) depletion region 

Last Answer : The  region  consisting  of  holes  and  electrons  in a  pn  junction  is called  depletion layer.The  reason  being  both  holes  and  electrons have neutrolyzed at the  junction  thus  it  is depleated  with  delocalized  charge  carriers.