State any two applications of zener diode.
Last Answer : Applications of Zener Diode: i) As a voltage regulator. ii) As a fixed reference voltage provider in transistor biasing circuits. iii) As peak clippers or limiters in wave shaping circuits.
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162 views
1 answer
asked
Sep 5, 2018
by
anonymous
List specification of zener diode
Last Answer : 1. Zener Voltage 2. Maximum Zener current 3. Power dissipation 4. Operating temperature 5. Dynamic Resistance
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92 views
1 answer
asked
Sep 5, 2018
by
anonymous
Explain with circuit diagram operation of zener diode as a voltage regulator.
Last Answer : The function of a regulator is to provide a constant output voltage to a load connected in parallel with it in spite of the ripples in the supply voltage or the variation in the load ... V0 = VZ is obtained across RL, whenever the input voltage remains within a minimum and maximum voltage.
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1.4k views
5 answers
asked
Sep 2, 2018
by
anonymous
When biased correctly, a zener diode:
Last Answer : When biased correctly, a zener diode: Has a constant voltage across it
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2.0k views
1 answer
asked
May 22, 2018
by
anonymous
Which stage is of a d.c. power supply uses zener diode 1. Rectifier 2. Voltage divider 3. Filter 4. Regulator
Last Answer : Rectifier
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2.3k views
2 answers
asked
May 13, 2018
by
anonymous
A 6V zener diode is used to provide voltage regulation with a series resistance of 100 Ohms and supply voltage is 12V. When under no load the power dissipated in the zener diode is (a) 60mW (b) 36mW (c) 360mW (d) 3600mW
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72 views
0 answers
asked
Apr 14, 2018
by
anonymous
Zener diode is used in _______. A. Regulated power supplies B. Power generators C. Sensor D. All of these
Last Answer : Zener diode is used in Regulated power supplies.
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88 views
1 answer
asked
Apr 12, 2018
by
anonymous
Last Answer : A zener diode works on the principle of Tunneling of charge carriers across the junction.
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92 views
1 answer
asked
Apr 1, 2018
by
anonymous
What is a Zener Diode ?
Last Answer : : Zener diode is a special type of diode.
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2 views
1 answer
asked
Jan 27
by
anonymous
How depletion region get thin by increasing doping level in a zener diode?
Last Answer : Doping is a process of mixing sum impurity in a iinsulator andthen that acts like conductor...The materials which are said tobehave like this are called semi conductor . it is very often toknow ... theDepletion region remains there but it never ends....i-e depletionregion can not be removed finally
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1 answer
For highly doped diode: a) Zener breakdown is likely to take place b) Avalanche breakdown is likely to take place c) Either (a) or (b) can take place d) Neither (a) nor (b) can take place
Last Answer : Ans: A
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1 answer
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.
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1 answer
In the illustration, the component VR2 on the A1 AMPLIFIER MODULE is _________. EL-0060 A. a zener diode to regulate the +9 volt power supply from common B. a variable resistor diode to control the output to terminal ... 2 at 9.1 volts DC D. a tunnel diode with a breakdown voltage of 6.6 Volts DC
Last Answer : Answer: C
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1 answer
In the illustration, the component VR1 on the A1 AMPLIFIER MODULE is _________. EL-0060 A. a zener diode to regulate the +9 volt power supply from common B. a variable resistor diode to control the output to ... terminal 9 at 6.6 volts DC D. a tunnel diode with a breakdown voltage of 6.6 Volts DC
Last Answer : Answer: A
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5 views
1 answer
In the illustration, the component VR1 on the A1A1 PCB is _________. EL-0060 A. a zener diode to regulate the +9 volt power supply B. a variable resistor diode to control the output to terminal 9 that controls ... terminal 9 at 6.6 volts DC D. a tunnel diode with a breakdown voltage of 6.6 Volts DC
Last Answer : Answer: C
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1 answer
In the electrical schematic, a Zener diode will be represented by which of the symbols shown in the illustration? EL-0067 A. A B. B C. C D. D
Last Answer : Answer: A
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1 answer
You have installed a Zener diode in parallel with a load. While measuring the voltage across the Zener diode it is found that it does not change as the current through the load increases. This means that the ... is working as it should B. is shorted C. is open D. does not regulate as it should
Last Answer : Answer: A
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1 answer
Figure 'C' shown in the illustration represents a _________. EL-0078 A. silicon controlled rectifier B. light emitting diode C. photosensitive diode D. Zener diode
Last Answer : Answer: C
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1 answer
Figure 'D' shown in the illustration represents a _________. EL-0067 A. silicon controlled rectifier B. light emitting diode C. photosensitive diode D. Zener diode
Last Answer : Answer: B
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1 answer
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Component 'CR1' shown in the illustration is called a/an _______________. EL-0085 A. avalanche diode B. Zener diode C. breakdown diode D. all of the above
Last Answer : Answer: D
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1 answer
The most common device used as an LNA is A. zener diode B. tunnel diode C. IMPATT D. Shockley diode
Last Answer : B. tunnel diode
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1 answer
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Explain Clipping using Zener Diode?
Last Answer : one or two zener diodes are used to clip the voltage VIN. In the first circuit, the voltage is clipped to the reverse breakdown voltage of the zener diode. In the second, it is limited to the reverse breakdown voltage plus the voltage drop across one zener diode.
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1 answer
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What Is Zener Diode? What Is Voltage Regulator?
Last Answer : The breakdown region of a p-n diode can be made very sharp and almost vertical diodes with almost vertical breakdown region are known a s zener diodes. A zener diode operating in the ... . Voltage regulator: The output remains constant despite changes in the input voltage due to zener effect.
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13 views
1 answer
What Is Zener Diode? What Is Voltage Regulator?
Last Answer : The breakdown region of a p-n diode can be made very sharp and almost vertical diodes with almost vertical breakdown region are known a s zener diodes. A zener diode operating in the ... . Voltage regulator: The output remains constant despite changes in the input voltage due to zener effect.
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6 views
1 answer
Hat Is Zener Diode? What Is Voltage Regulator?
Last Answer : The breakdown region of a p-n diode can be made very sharp and almost vertical diodes with almost vertical breakdown region are known a s zener diodes. A zener diode operating in the breakdown ... . It is this constant voltage that has made the zener diode an important device in voltage regulation.
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7 views
1 answer
What is Zener Diode ? What is a voltage Regulator ?
Last Answer : The breakdown region of a p n diode can be made very sharp and almost vertical Diodes with almost vertical breakdown region are known as Zever Diodes. A Zener diodes operating in the breakdown ... VOLTAGE REGULATOR : The output remains constant despite changes in input voltage due to Zever effect.
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1 answer
Why is electron flow with the arrow in the symbol of a Zener diode instead of against the arrow as it is in a normal diode?
Last Answer : Because Zener diodes are operated in the reverse bias mode.
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1 answer
asked
Aug 20, 2021
by
anonymous
What is the doping level of an avalanche effect diode when compared to the doping level of a Zener-effect diode?
Last Answer : The doping level of an avalanche effect diode is lower.
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6 views
1 answer
asked
Aug 20, 2021
by
anonymous
What is a zener diode?
Last Answer : A zener diode is a special kind of diode which allows current to flow in the forward direction in the same manner as an ideal diode, but will also permit it to flow in the reverse direction when ... is above a certain value known as the breakdown voltage, "zener knee voltage" or "zener voltage."
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1 answer
asked
Aug 12, 2021
by
anonymous
A circuit which develops voltage across the horizontal deflection plates is known as a) Time base generator b) Electron gun c) Thermionic diode d) Zener diode
Last Answer : a) Time base generator
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1 answer
asked
Aug 4, 2021
by
anonymous
Explain Zener diode as voltage regulator.
Last Answer : Zener Diodes can be used to produce a stabilised voltage output with low ripple under varying load current conditions. By passing a small current through the diode from a voltage source, via a ... across the load in spite of variations in the input voltage or changes in the load current.
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108 views
1 answer
asked
Apr 6, 2021
by
anonymous
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)
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128 views
1 answer
asked
Mar 19, 2021
by
anonymous
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.
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83 views
1 answer
asked
Mar 19, 2021
by
anonymous
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
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1 answer
asked
Mar 18, 2021
by
anonymous
Compare P-N junction and Zener Diode.
Last 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 ... . It cannot be used for rectification, but commonly used for voltage regulation
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1 answer
asked
Mar 17, 2021
by
anonymous
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.
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276 views
1 answer
asked
Mar 17, 2021
by
anonymous
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
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31 views
1 answer
asked
Jan 20, 2021
by
anonymous
Give the speciality of zener diode. State its 2-3 applications
Last Answer : Speciality - This diode can keep breakdown voltage constant across it. It is used in reverse bias. Applications - Zener diodes voltage regulation as reference elements surge suppressors switching applications clipper circuits.
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108 views
1 answer
asked
May 26, 2020
by
anonymous
Draw symbols of zener diode and LED.
Last Answer : Symbol of zener diode : Symbol of LED
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433 views
1 answer
asked
May 16, 2020
by
anonymous
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While studying the V-I characteristics of a zener diode, there are two different values of resistors connected in series with it. In case of the forward characteristics, a ~70 ohm resistor is connected ... ~510 ohm resistor. What is the reason behind it ? Is the difference really necessary ?
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0 answers
A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω
Last Answer : A zener voltage regulator has load requirements of 12 V and 2 A. The zener diode minimum current requirement is 0.2 A. The minimum voltage at input is 24 V. What is the required value of series resistance with source? A) 5.45 Ω B) 6 Ω C) 7.2 Ω D) 6.38 Ω
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2.7k views
1 answer
asked
Jun 18, 2018
by
anonymous
A Zener diode has a break down voltage of 9V and maximum power dissipation of 360 mW. The maximum current the diode can handle is (a) 20 mA (b) 30 mA (c) 35 mA (d) 40 mA
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235 views
0 answers
asked
May 25, 2018
by
anonymous
The reverse breakdown phenomenon in a zener diode is known as
Last Answer : The reverse breakdown phenomenon in a zener diode is known as Avalanche effect
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154 views
1 answer
asked
May 14, 2018
by
anonymous
Last Answer : A Zener diode is operated in the Breakdown Region
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83 views
1 answer
asked
Mar 29, 2018
by
anonymous
Last Answer : A Zener diode is operated in the Reverse bias around the knee of breakdown region mode as a voltage stabilizer.
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138 views
1 answer
asked
Mar 28, 2018
by
anonymous
How can you identify a zener diode?
Last Answer : It conducts current in either direction.
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239 views
2 answers
asked
Mar 15, 2018
by
anonymous
Last Answer : Applications of zener diode are : Zener diode can be use for voltage regulator. Zener diode can be use for clippers or limiters. Zener diode can be use for overvoltage protection. Zener ... reference. Zener diode can be use as transistor regulator. These are some applications of zener diode.
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145 views
1 answer
Can we use a zener diode as a rectifier?
Last Answer : Yes we can use zener diode as rectifier but it have limitations better to use normal diode. Zener diode have some different applications.
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2.6k views
1 answer
asked
Dec 9, 2017
by
anonymous
Last Answer : PN junction of zener diode is heavily doped than ordinary diode. For the occurrence of Zener effect the zener diode is heavily doped. If the zener diode is not heavily doped then Zener effect ... breakdown voltage is sharp. If the diode is lightly doped the diode will have higher breakdown voltage.
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263 views
1 answer
asked
Sep 13, 2017
by
anonymous
Last Answer : Yes dynamic impedance of zener diode vary.
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778 views
1 answer
asked
Sep 13, 2017
by
anonymous
