113 views
What are the disadvantages of the linear regulator? how are they overcome in the switching regulator? What is continuous and discontinuous mode switching regulator?

1 Answer

Answer :

Disadvantages of the linear regulator:

  • Linear regulator waste power in the form of heat.
  • Linear regulator has very low efficiency.
  • Linear regulator cannot be used for the step-up purpose.
  • Linear regulator is not suitable for large power applications.
  • Linear regulator has only one output.

Advantages of switching regulator over linear regulator:
  • Switching regulator have more efficiency than the linear regulator. Switching regulator have about 70 to 90 percent efficiency.
  • Switching regulator is used for both step-up and step-down operations.
  • The cost and size of the switching regulator are advantageous as compared to the linear regulator for larger applications.
  • By adding windings switching regulator can provide more than one output voltage.

Continuous mode and discontinuous mode switching regulator:
  • In the continuous mode switching regulator, the switch is turned on before the stored energy in secondary winding gets empty.
  • In Discontinuous mode switching regulator switch is turn on after the stored energy in secondary winding gets empty.
  • This is the difference between continuous mode and discontinuous mode switching regulator.
image
Like 0 like

Please log in or register to answer this question.

Related questions

134 views

Description : what is linear regulator?

Last Answer : linear regulator video

2 answers
883 views

Description : Describe the functional pin diagram of regulator IC 78XX and 79XX.

Last Answer : IC 78XX: Explanation: 78XX series of IC regulators is representative of three terminal devices that are available with several fixed positive output voltages. It has three terminals labeled ... can also use 25μF aluminum electrolytic capacitor. Values given may be increased without limit. 

1 answer
69 views

Description : Enlist names of regulator IC’s .

Last Answer : 1. Fixed Voltage Regulators IC - a. Positive voltage regulator IC’s - 78XX series eg. 7805, 7812 etc.  b. Negative voltage regulator IC’s - 79XX series eg. 7905, 7912 etc.  2. Adjustable Voltage Regulator - LM317 is example of positive adjustable voltage regulator.

1 answer
70 views

Description : What is regulator ? State its need.

Last Answer : A voltage regulator is a circuit or device designed to deliver a constant voltage at its output regardless of changes in ac supply voltage and load current. Need:- A voltage regulator is one ... unexpected result or damage one of the components in the circuit, hence voltage regulator is needed.

1 answer
2.7k views

Description : 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  

1 answer
109 views

Last Answer : The voltage regulation in magnetic amplifier type voltage regulator is effected by varying the reactance.

1 answer
105 views

Last Answer : It is simply variable resistance create opposition to flow of current and decrease or increase the speed of fan

1 answer
330 views

Description : The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at a gate voltage of 3V. Pinch off would be occurs at a drain voltage of (A) 1.5V (B) 2.5V (C) 3.5V (D) 4.5V

Last Answer : The threshold voltage of an n- channel enhancement mode MOSFET is 0.5V when the device is biased at a gate voltage of 3V. Pinch off would be occurs at a drain voltage of 2.5V

1 answer
897 views

Description : what are the disadvantages of thyristor?

Last Answer : Disadvantages of thyristor The silicon controlled rectifier (SCR) is unidirectional devices, so it can control power only in DC power during positive half cycle of AC supply. Thus only DC power is ... cycle. It cannot be used at higher frequencies. The gate current cannot be negative

2 answers
65 views

Description : Explain series switching control of AC load. Single phase resistance load - Integral half cycle control Phase control - Resistance load

0 answers
77 views

Description : Explain switching model of MOSFET.

0 answers
78 views

Description : Explain space vector transformation and space vector switching with the help of diagram. What are the advantages of SVM?

0 answers
1.7k views

Description : Draw the structural diagram of GTO. Explain briefly the switching behavior of GTO with the help of appropriate voltage and current waveform.

Last Answer : Gate Turn Off Thyristor (GTO) Conventional Thyristor can be turned on with gate terminal but can not turn off from gate terminal. But in case of Gate Turn Off Thyristor (GTO), we can turn it on and off ... subdivided as storage period (Ts), fall period (Tp) and tail period (Tt).

1 answer
8 views

Description : Mention The Steps In The Interrupt Driven Mode Of Data Transfer.?

Last Answer : Answer :The steps followed in this type of transfer are as follows: The peripheral device would request for an interrupt. The request acknowledgement for the transfer is issued at the end of ... coordinates by the ISS. Again the Interrupt system is enabled and the above steps are repeated.

1 answer
83 views

Description : Compare characteristics of asynchronous and synchronous transmission mode (four points). 

Last Answer : Synchronous transmission Asynchronous transmission 1. Synchronous transmission are synchronized by an external clock. 1. Asynchronous transmission are synchronized by special signals along the transmission ... for transferring a small amount of data as it is simple and economical.

1 answer
208 views

Description : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is :

Last Answer : A 3-phase voltage source inverter operates in 180° conduction mode with a star connected resistive load. If input dc voltage is 100 V, then the peak to peak output line voltage is : 200 V

1 answer
116 views

Description : Describe the basic SHA operation with the help of its four mode specifications.

Last Answer : Sample-and-hold amplifier (SHA) is a unity gain amplifier with a mode control switch where the input of the amplifier is connected to a time-varying signal. A trigger pulse at the mode control switch ... but other forms, such as optical and mechanical forms, are possible. Also denoted S/H.

1 answer
169 views

Description : A linear network has a current input 4cos(ω t + 20º)A and a voltage output 10 cos(ωt +110º) V. Determine the associated impedance.

Last Answer : Solution

1 answer
98 views

Description : What are ‘Linear actuators’ ? State applications.

Last Answer : What are ‘Linear actuators’ ? State applications.

2 answers
2.6k views

Description : Linear algebra problem: Rank of a matrix

Last Answer : Linear algebra problem: Rank of a matrix https://youtu.be/b7tPLA3_y6Y

1 answer
89 views

Description : Linear algebra problem: The determinant of the matrix

Last Answer : Answer : Linear algebra problem: The determinant of the matrix

1 answer
111 views

Description : Linear Algebra Problem the solution to the system of equations

Last Answer : Linear Algebra Problem the solution to the system of equations https://youtu.be/y_FlupirxZM

1 answer
2.6k views

Description : Linear Algebra Problem 2

Last Answer : https://youtu.be/zAPDYO0q-9w Linear Algebra Problem 2

1 answer
114 views

Description : Linear Algebra Problem The product of eigen values of the matrix

Last Answer : Linear Algebra Problem The product of eigen values of the matrixhttps://youtu.be/JGcynUZFQ78

1 answer
127 views

Description : Linear and non-linear device

Last Answer : Linear and non-linear device

1 answer
116 views

Description : A system is linear if and only if it satisfies

Last Answer : A system is linear if and only if it satisfies principle of superposition and principle of homogeneity

1 answer
320 views

Description : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will

Last Answer : A network contains linear resistors and ideal voltage sources. If values of all the resistors are doubled then the voltage across each resistor will not change

1 answer
113 views

Description : Which of the following converts linear displacement from a mechanical reference into a proportional electrical signal containing phase and amplitude information? A) CRO B) LVDT C) RVDT D) None of these

Last Answer : Which of the following converts linear displacement from a mechanical reference into a proportional electrical signal containing phase and amplitude information? A) CRO B) LVDT C) RVDT D) None of these

1 answer
91 views

Description : The power flow problem mathematical model for a linear transmission network (A) is non-linear (B) is linear (C) considers time variation of generation (D) does not consider tap-changing transformers

Last Answer : The power flow problem mathematical model for a linear transmission network is non-linear

1 answer
68 views

Description : What do you mean by linear convolution?

0 answers
59 views

Description : Is a convolution linear?

0 answers
1.1k views

Description : What is the difference between linear and nonlinear electrical loads?

0 answers
60 views

Description : What is a non linear load?

0 answers
94 views

Description : Why do non linear loads cause harmonics?

0 answers
75 views

Description : write short notes on Linear motor.

Last Answer : Normal electrical motor produces rotatory motion same the linear motor produces linear motion. Linear motors have low efficiency. Linear motor can directly produce straight line motion linear motor do not required gears or crank shaft to produce linear motion.

1 answer
419 views

Description : Linear Time Invariant (LTI) System

Last Answer : Linear Time Invariant System Linear system means a system which possesses the property of superposition. Time invariant system means its behavior and characteristics are fixed over time. Before ... from the impulse response. Impulse response is related to frequency response via Fourier transform.

1 answer
316 views

Description :  State the disadvantages of skin effect.

Last Answer : Disadvantages of skin effect:- 1. Full cross section of conductor is not utilized, Therefore effective area of conductor reduces so its resistance increases. 2. Due to increase in resistance, copper ... increases (Since Voltage drop = IR ) 5. So voltage regulation becomes poor (increases) 

1 answer
498 views

Description : State advantages and disadvantages of radial distributor system. 

Last Answer : Advantages of radial distributor system: 1. Design of layout is simple. 2. Capital cost & Erecting cost is less as there is only one feeder. 3. Time required for completion of ... maintain supply to consumers when there is maintenance on feeder. 3. Voltage fluctuations are more.

1 answer
92 views

Description : advantages and disadvantages of ICs.

Last Answer : Advantages of ICs: 1.The physical size of an IC is extremely small (generally thousand times smaller) than that of discrete circuits. 2. The weight of an IC is very less as compared to that of ... is high 3. Power dissipation is limited. 4. ICs are very delicate and need extra care while handling

1 answer
2.5k views

Description : What are advantages and disadvantages of Mechatronics system? 

Last Answer : Advantages of Mechatronics system:  High level of integration.  Increased functionality and better design.  More use of electronics and software instead of mechanical function.  Assumes ... Its replacement is difficult, that it is difficult to change old system to new system. 

1 answer
2.4k views

Description : State advantages and disadvantages of fiber optic communication

Last Answer : Advantage of fiber optic communication: 1.Greater information capacity/ higher bandwidth OFC's are capable of transmitting several gigabits per second over hundreds of miles allowing millions of ... are not flexible 7.Requiring more protection around the fiber cable compared with copper cable

1 answer
121 views

Description : State advantages and disadvantages of continuous wave Radar

Last Answer : Advantages continuous wave RADAR : 1.Single frequency transmission and hence narrow receiver bandwidth 2.Duty cycle is unity, so mean power can be as high as transmitters will permits. 3.Ability ... required for receiver and transmitter. 3.Cannot detect targets crossing its beam at right angles.

1 answer
82 views

Description : State advantages & disadvantages of electromagnetic flow meter.

Last Answer : Advantage: Provides wide linear range. 2) Ability to measure reverses flow. 3) Gives rapid response to flow changes. 4) No obstruction is created to flow. 5) It can handle corrosive as ... and pipe networks with relatively short inside diameters. 3) It is useful for electrically conducting fluid.

1 answer
80 views

Description : List advantages and disadvantages of MEMS.

Last Answer : Advantages : 1. Batch fabrication and hence reduced cost. 2. Reduced size and reduced power ( due to pin size and reduced package volume) 3. High precision and resolution. 4. Reduced ... cannot be loaded with large forces because brittle materials can be fractured easily under high stress.  

1 answer
118 views

Description : What are the disadvantages of Open loop control system?

Last Answer : Open loop control system are less reliable. In open loop control system Optimization is not possible. Open loop control system are less accurate.

1 answer
93 views

Description : State the advantages and disadvantages of hydroelectric power plant.

Last Answer : Advantages of Hydroelectric power plant:-  1. There is no air pollution and other environmental problems. 2. The fuel (water) is available freely. 3. No fuel transportation cost so; there is ... , this can force the relocation of large numbers of riverside cities, towns, villages & people.

1 answer
179 views

Description : State any two advantages and two disadvantages of nuclear power plant.

Last Answer : Disadvantages of Nuclear Power Plant: -   1. The capital cost of Nuclear power plant is very high as compare to other power plant of same capacity. 2. The erection & ... material could be released into the environment. Causing extensive damage to the mankind,animals and environment.

4 answers
128 views

Description : State any four advantages and four disadvantages of diesel electric power plant. 

Last Answer : Advantages of Diesel electric power plant:- 1) The design and layout of Diesel electric power plant is simple. 2) It requires less space. 3) Time required for complete erection of diesel power plant is less ... . 9) The useful life is very short. 10) Availability of fuel in future may be limited.

1 answer
...