Advantages and Disadvantages of DVD

As we know that DVD is a type of compact disk able to store a large amount of data, especially high-resolution audiovisual material so when you have compared your data storage options, there is no one size fits at all approach. At that time you may find DVD storage is perfect for your situation, while another user may find it inconvenient. Here this post gives the information about merits or advantages and disadvantages or demerits of DVDs to better understand this topic.

Advantages of DVDs:

  • Very large storage capacity.
  • Increasing availability.
  • It is easily available in every store.
  • It is portable.
  • High data stability.
  • The DVD drive can read CDs.
  • DVDs are now mass-produced so they are relatively cheap.
  • Sound and picture quality is excellent which makes them suitable for sound and video.
  • Price is dropping for both DVDs as well as for the DVD drives.

Disadvantages of DVDs:

  • DVDs do not work in CD ROM drives.
  • It is not easy to change data.
  • There is no single standard on DVD.
  • When we have to use DVDs,  it has built-in copy protection and regional lockout.
  • Still, a relatively new technology so still expensive compared to CD-ROMs and VCR.
  • It require burning software to record some information to it.
  • DVD uses digital compression. poorly compressed audio or video may be like fuzzy, harsh or vague, and blocky.
  • DVD doesn't fully support HDTV.
  • They can be easily damaged by breaking or by some scratching.
  • Some DVD players and drives can't read record-able DVDs.
  • Some DVD players and drives can't read CDs.
  • View a few players who can play in reverse at normal speed.
  • Variations and options such as like DVD audio, DVD-VR, and DTS audio tracks are not supported by all players.
  • Most DVD players and drives can't read DVD-RAM discs.

Magnetic tapes advantages and disadvantages

Magnetic tape is most commonly used to record and to store computer and video data. Before the CD and DVD came along, the magnetic tap was widely used by consumers. Magnetic tape is most communally used y large companies and organizations that require massive data stores. Here this pose gives information about the advantages and disadvantages of magnetic tape to better understand this topic.

Advantages of magnetic tape:
  • Magnetic tape can e recorded over and reused repeatedly.
  • Magnetic tape is inexpensive and budget-friendly.
  • Can storage large amounts of data unto 1 terabyte per tape cartridge.
  • Data collection can go without interruption overnight or for an entire weekend.
  • It can be set up to do the back up overnight or over the weekend.
  • It is probably the cheapest form of storage per megabyte of storage.

Disadvantages of magnetic tape:

  • Magnetic tape has a lifespan of 15 years. Data quality erodes over time.
  • This tape is necessary to keep older tape equipment just to be able to read the stored data.
  • If the data is stored ear a strong magnetic field or large speaker, the tape can be damaged.
  • Magnetic tap is in physical contact with the recording heads, causing friction and wear. 
  • Special equipment must be purchased and set up to record and store data. The data can only be read on the special type of equipment.
  • It is slow compared to magnetic disks.
  • It is not flexible, and updating the records is difficult.
  • Away from corrosive gases ad chemicals, they can cause tape reading errors.
  • Use parity bits, hence if a minor error occurs it is difficult to recover the data.
  • It was sequential in nature, not suitable where data is accessed and requires a random order.
  • This tape is needed to be a special piece of equipment to record and read the data on the tape.
  • The tape can stretch or break or lose its magnetic data to age, heat, or the earth magnetic field.

MCB applications

Some of the applications of  MCB are listed below:

  • MCB is used in new constructions home, shops instead of the older types of fuses.
  • MCB is designed to protect the house from the circuit overload.
  • MCB is required in homes, offices, and shop distributions boards for the protection of individuals' circuits and complete wiring systems in that building through the main circuit.
  • They are being used extensively these days and are virtually replacing the traditional rewire-able fuses.
  • MCB can be used with a ground fault or arc-fault mechanism because the breakers consist of the system that opens the contacts if a line to ground fault occurs.
  • MCB is sightly more expensive than fuses but this is offset by the fact no cost is involved. I resting them after the operation and it is a very quick and simple process.
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Limitations of ELCB

Some limitations of ELCB are listed below:

  • Failure to respond at certain conditions.
  • As we know the disadvantages of ELCB as that ELCB needs a sound earth connection, for the load protects.
  • ELCB does not detect a fault that doesn't pass current through CPC to earth rod.
  • ELCB does not allow a single building system to easily split into multiple sections with independent fault protection because the earthing system is bonded to the pipework.
  • Some electrical leaky appliances water heater, washing, machine, and coolers may cause CKL to trip.
  • ELCB may be tripped by the external voltage from something connected to the earthing system such as a metal pipe.
  • This breaker may be tripped by external voltage from something connected to the earthing system such as metal pipes.
  • If the electrical installation earth rod is placed close to another or the same of the earth of a building, then a high earth leakage current from other buildings can raise the local ground potential and cause a voltage difference across the two earth, again tripping to the ELCB.
  • They introduce additional resistance and an additional point of failure into enough voltage to cause it to trip.
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Limitations of RCCB

Some limitations of RCCB are listed below:

  • RCCB does not protect from the overheating that strike if conductors are not screwed into terminals.
  • RCCB does not guarantee to operate if none standard waveform is generated by the load. It is because RCCB is designed to operate on a normal supply waveform.
  • RCCB does no shield against line neutral shocks.  Because the reason for the current in them is stable. The current gets balanced as both the terminals are carried together.
  • RCCB does not protect against line neutral shocks. It's mainly because the current in them is balanced. The current gets balanced between as both terminals are held together.
  • In RCCB, there might be some unwanted tripping of RCCB. It is mainly because whenever there are sudden changes in electrical load, there can be small current flow to earth, especially in the old appliances.
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Precautions of multimeter

Some precautions of multimeter:

  • When you have to use multimeter first check proper DC polarity when measuring DC.
  • You have to always start with the highest voltage or current range.
  • De-energize and discharge the circuit completely prior to connecting or disconnecting to a device called a multimeter.
  • Be sure that the multimeter is switched during the to AC prior to trying to measure AC circuits.
  • Choose the final range that enables a reading close to the middle of the scale.
  • Set the ideal current range before measuring higher current or some else it will blow the digital multimeter fuse. 
  • A resistor should be measured standalone or the connected parts in the circuit may affect to some of the reading.
  • Never apply power to the circuit when you have to measure resistance with a multimeter.
  • Be sure to read AC measurements on the AC voltage position.
  • In case you want to verify the presence of dangerous voltage in a circuit with a digital multimeter, it is crucial to verify both the  AC as well as DC voltage.
  • Make sure that change the 0 ohms reading after changing resistance ranges before creating a resistance measurement.

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Applications of multimeter

We all know that a multimeter is extremely too important for electronics and electrical instruments and is extensively used for carrying out various tests and to measurements in electronics as well as electrical circuits. 

There are two types of multimeter basically analog multimeter and digital multimeter. they are many advantages of the analog multimeter as well as digital multimeters advantages. The applications are measuring accurately circuit and component parameters. They are different type of multimeter is used for the test, to adjust and troubleshoot electronic circuits, traditionally multimeter of either type measure three main parameters.

1. Current both AC and DC
2. Voltage both AC and DC
3. Resistance

The main Applications of multimeter are listed below:

  • Voltage measurement: High and low value DC measurement and peak to peak and DC average measurement.
  • It will use for temperature and environmental applications: Low-cost weather station, DMM internal temperature.
  • Resistance measurement: Micro ohm meter, measuring with constant voltage and measuring resistance with constant current
  • Time and frequency measurement: Fast frequency, and time measurement
  • Current measurement: DC current measurement, true RMS AC current

LiFi vs WiFi: Which Technology Will Dominate the Future?

We all know that LiFi stands for Light fidelity while in WiFi stands for wireless fidelity. LiFi uses the light for data transmission while in WiFi uses electromagnetic waves at radio frequencies for data transmission. In this article, we list some main key difference between LiFi and WiFi. 

The main key difference between LiFi and WiFi are listed below:

  • LiFi stands for light fidelity while in, WiFi stands for wireless fidelity.
  • LiFi coined by Prof  Harald has i2011, while WiFi is invented by CR corporation o 1991.
  • LiFi works based on the VLC principle, while WiFi consists of two important devices namely, WiFi router, or AP, WiFi dongle and WiFi stations.
  • LiFi transmits data using light y the help of LED bulbs, WiFi transmits data using radio waves using a WiFi router. 
  • LiFi presents an IrDA compliant device while in WiFi WLAN 802.11/b/g/n/ac/d standard-compliant devices.
  • Conversion distance in LiFi is around 10 meters but in conversion distance of WiFi about 32 meters. 
  • The data transfer speed of LiFi is about 1 Gbps, and the WiFi ranges from 150 Mbps to a maximum of 2 Gbps.
  • Frequency operation of LiFi 10000 time-frequency spectrum of the radio, but in WiFi 2.4 GHz, 4.9 GHz, and 5 GHz.
  • While in LiFi using light is blocked by the walls hence provide more secure data transfer but in WiFi, walls cannot lock radio waves so we need to employ more techniques to achieve secure data transfer.
  • The data density of LiFi works with a high dese environment while WiFi work in a less dense environment due to interference related issues.
  • Minimum components used in LiFi is LED blub, LED driver and photodetector, WiFi used router, modems, and access points.
  • LiFi is mainly used in airlines, undersea exploration, hospitals, offices,  home premises, etc but WiFi used for internet browsing with the help of a WiFi hotspot.

Full form of HiFi

What is the full form of HiFi?

  • High Fidelity

What does HiFi mean?

Some of the people who understand that HiFi has a connection with WiFi but HiFi is the word used for high-quality production. This term used mostly used listeners, home audiophiles, listeners of music with quality production. 

Features of LiFi

nowadays LiFi technology include is the latest technology, its advantages to the capacity, availability, speed, cost, energy efficiency, safety, the security of a wireless system with a number of key benefits over WiFi ut is inherently a complementary technology.

Some key features of LiFi technology are listed below:

  • LiFi technology provides 1k times with greater data density compared to that of WiFi.
  • It is two-way communications that use the medium of light.
  • LiFi light is present everywhere.
  • It is safe technology to transfer confidential manner.
  • It eliminates any health hazards caused by radio frequency (RF) waves.
  • The visible light spectrum is plentiful, free to use and unlicensed.
  • The diode called a photodiode, which is used as a receiver which can turn light into electrical signals.
  • The LiFi system would be of low cost as it requires less number of components.
  • No additional power input is required for this technology, moreover LED illumination is already efficient.
  • The use of light cannot interfere with any electronic circuitry and hence the technology is a safe ad on the hazard.
  • Haking is negligible compared to WiFi since the rage of data transmission is confined to a certain area.
  • RF transmission and propagation in water are extremely difficult but LiFi works well in this environment. 
  • Very high-speed data rates can be achieved due to low interference, high device bandwidth, and high-intensity optical output.
  • Require fewer components than radio technology.
  • Capacity for planning is simple since there tends to be illumination infrastructure where people wish to communicate, and also good signal capacity and strength can literally be seen.

Full form of GiFi

What is the full form of GiFi


  • Gigabit Fidelity

What does a GiFi mean?

In today the world is changing drastically. One of the biggest improvements made in wireless technology was inventing a new wireless technology called GiFi.

GiFi is a wireless transmission technology. This technology was ten times faster than other wireless technology. It is manufacturing using CMOS technology. The best part of GiFi technology is its power consumption. GiFi data transfer rate around the speed of 5 Gbps. The evolution of GiFi came into existence due to the need for higher data transfer rates and low power consumption.

Features of GiFi

GiFi stands for Gigabit wireless fidelity. This technology is a wireless technology, which is ten times faster than the other wireless technology. This technology chip delivers short rage multi-gigabit data transfer in an indoor environment. Now today's world fastest transmission transceiver integrated on a single chip that operates up to 60 GHz frequency band. GiFi has data transfer speed up to around too much high, 5 Gbps. Here this post gives some basic key features of GiFi technology to better understand this topic.

Some key features of  GiFi are listed below:

  • High speed of data transfer
  • Small size
  • GiFi technology is simple.
  • Quick deployment
  • Highly portable
  • High mobility
  • Provide a better coverage area
  • Low power consumption
  • High security
  • Cost-effective
  • Eliminating the cable
  • Low-cost chip
  • Better transfer rate
this technology eliminates the need for
cables to connect electronics devices, and connects all the
devices wirelessly in order to transmit the data
this technology eliminates the need for
cables to connect electronics devices, and connects all the
devices wirelessly in order to transmit the data
this technology eliminates the need for
cables to connect electronics devices, and connects all the
devices wirelessly in order to transmit the d

Application of GiFi

GiFi has given and it's conspicuous that more research should be done in the field of this new wireless technology and its applications.

Here some applications of GiFi are listed below:

  • It can connect your household things.
  • You can easily connect your smartphone to your HD television, PC, laptop, printers, etc
  • Efficient transfer of data from digital camcorders.
  • As the transfer data at high speed that made work very easy.
  • We can transfer the speed of Gbps.
  • The intelligent community uses it for high-security communications.
  • Easy and immediate construction of temporal broadcast networks such as in sports stadiums for the advertisement of information can be possible.
  • This technology can be effectively used in the inter-vehicle communication system. Adhoc information distribution with a point to point network extension.
  • The data exchange between vehicles is made possible by ad-hoc networks, MAC wireless PAN and many other applications.

Limitations of fuse

There are some limitations of fuse are listed below:
  • The heat produced by the arc may affect some of the associated switches.
  • Action is by melting of fuse so this could be rather slow in some situations.
  • During short circuit or sone overload in the circuit once fuse blows off replacing of fuse takes time. During this period the circuit lost power.
  • Need replacement when blows off by overcurrent.
  • It has a low speed.
  • You have to keep a replacement handy in case fuse is blows.
  • Fuse can't bear a surge current in the case of motor starting.
  • Fuse is not suitable for overloading.
  • Fuse has a low breaking capacity.
  • Fuse is not protected to the circuit against under-voltage.
  • It can be replaced by an oversized fuse by a novice to ensure it does not blow next time. This can damage the equipment it is supposed to protect.
  • The current-time characteristics of a fuse cannot always be correlated with that of some protected device.
  • When the fuse is connected in series it is difficult to discriminate the fuse has a significant size difference.
  • The protection of fuse is not reliable.
  • On the heavy some short circuit in the system, the discrimination between the fuses in series cannot be obtained unless there are considerable differences in the relative sizes of the fuses will be concerned.
  • Considerable time is lost in rewiring or replacing a fuse after the operation.

Difference between MCB and fuse

What is a fuse?

The most common overcurrent device is a fuse. A fuse is merely a small length of wire. Fuse is always placed on the phase wire.

What is MCB?

MCB called Miniature circuit breaker,  MCB is designed to operate on overload current and they can be used as protection devices for the individual circuit. MCB can also provide magnetic fault protection and short circuit protection.

 MCB can be changed over the switch needs to be pushed backed to the On position. While in the case of the fuse, the whole wire will have to be replaced first and there are also have some disadvantages of a fuse like it has low breaking capacity, and it has slow compared to other circuit breakers. So here this post gives information about several advantages of MCB over fuse or we can say that why we have to use MCB better than a fuse.

The main key difference between MCB and Fuse are given below:

  • As we know that relay is a switch, it is not usually meant to open under fault conditions and would likely fail if done so while in the fuse is a fault protection device. If a short circuit is developed, a large current will flow, and the fuse link will melt, causing the circuit to open.
  • All the relay is considered to be a fuse, but all the fuse are not considered as a relay.
  • A relay can be reset and put back into service after an overload but in the fuse needs to be replaced after every fault.
  • Fuse is mainly used for protection to our equipment so that when the high current passed through fuse more than its limit it will melt and protect our appliances but while in case of the relay it is used to accurate the high power appliance from the low power triggers. We can make fuse out of relay using a circuit but can do it in the fuses. 
  • A fuse protects from the overload and relay is a control device that uses a small amount of electrical current to control a larger amount or current.
  • Relay work with DC supply but in the fuse did not need DC supply.
  • A fuse is used for breaking the circuit while the relay is used for sensing purposes.
  • MCB is sensitive to vibration and movement, which can cause the switch to trip for reasons unrelated to an electricity overload, but in the fuse does not influence by vibration nor movement was secured in the fuse housing and was not rely on the switching mechanism as MCB.
  • MCB is costlier than the fuse unit system.
  • MCB, quick restoration is possible by just switching operation, resettable but infuse quick restoration of supply can not be possible because fuse must be replaced once blown.
  • Handling MCB is more electrically safe than a fuse.

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Fuse applications

Electrical fuses are one of the main components in almost all electrical and electronics circuits, and applications. Some of the few commonly known application of fuses are mention below.

Fuse is used in many industrial electrical as well as some electronics applications.
  • Hard disk drives
  • Laptops
  • Cameras
  • DVD writers
  • DVD players
  • Home electrical wiring
  • LCD monitors
  • Power transformer, capacitors, 
  • Power adapter
  • Motor starter
  • All electrical appliances(Air conditioners, TV, Music system)
  • Automotive systems
  • Distribution board
  • Portable electronics
  • Printer/scanners
  • Cell phones
  • All automobile(Car, bike, trucks, buses, motor, etc)
  • Battery packs
  • Gaming systems and portable electronics
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LiFi applications

LiFi stands for Light Fidelity, LiFi uses the applications are varied as a result of its key features such as directional lighting, energy efficiency, intrinsic security, high data rate capability, integrated networking capability and also many more advantages of LiFi. Here this pose gives an introduction about how the LiFi technology applications used in a different area.  
The different type of main application of LiFi are listed below:

EMI sensitive environments

Li-Fi enabled lighting will allow high data rate connectivity for each and every passenger. This process will allow connectivity at all times without creating electromagnetic interference with sensitive radio equipment on the flight deck. 

Underwater communication

Radio waves are quickly absorbed in water, preventing underwater radio communication, but light can penetrate for large distances. Therefore LiFi can enable communication from driver to driver, driver to mini-sub, driver to drilling, etc.

Traffic light

LiFi can be used to provide drivers with traffic and also to be weather updates as they wait at the traffic for light. This also eliminates the problem of getting critical traffic updates to drivers who are already on the road.

The Military

Unlike WiFi, LiFi is confined to a small range. As light does not penetrate walls, data transmitted over LiFi can be limited to a small area such as a tent. This makes LiFi great for use by the military even in remote locations as the data can't be intercepted by the outside hackers. 

Augmented reality

This system will exhibit in museums and galleries that are illuminated with specific lighting. LiFi enabled lighting can provide localized information within the light. This means that visitors' cameras or mobile phones can be used to download further information regarding the object being viewed from the light that illuminates the exhibit.

Safety environments

In the explosion hazard environment, the use of electrical equipment, including mobile phones, is generally greatly restricted. The use of LiFi, will to the pass data simplify the configuration of data networks in such an environment and it can enable new systems to enhance security in these real environments.

Localized advertising

 By using shop display lighting as a LiFi broadcast channel used and, it is possible to transmit the advertising information on the goods being viewed, as well as say special offers and coupons. This will allow the merging of the high street and online shopping experience, and provide a novel retail business model to emerge. 

Sensitive data

 Hospitals are specific cases of an environment where both EMI sensitivity and security of data are issues. LiFi can enable the better deployment of secure networked on medical instruments, and patient records.

Indoor navigation

 Be identifying each light it is possible to provide a smart means of navigating through the urban environment. The identification of each code would of each code be linked to a specific location.

 Connectivity

 Our homes already have lighting widely installed. So the uses of the LiFi system enabled lighting will transform the various applications that can be envisaged, that not only the interconnection of devices, such as televisions computers and HiFi but also connecting ordinary domestic appliances, such as fridges, washing machines, vacuums.

Advantages and disadvantages of fuse

Fuse is the cheapest protection device in all over the electrical circuit against the short circuit overloading of the circuit. Fuse is used in low and moderate voltage applications where the frequency operations not expected or where the use of a circuit breaker is uneconomical. It is a basic metal wire or thin strip which has the property of a low melting point which is inserted into the electrical circuit as a protective device. The fuse will protect the machine or electrical equipment against excessive currents. Here this post gives information about the advantages and disadvantages of fuse to better understand how to fuse is used in an electrical circuit.

Advantages of Fuse:

  • Fuses are the cheapest form of protection.
  • The fuse element change very easily.
  • The fuse needs zero maintenance.
  • It affords the current limiting effect under short circuit conditions.
  • Its operation is completely automatic and requires less time as compared to circuit breakers and no complexity is envolved
  • Most of the fuses are self-protecting and also they extinguishing the arc.
  • When we use the small size of the fuse element impose a current limiting effect under short circuit conditions.
  • Its inverse time-current characteristics enable its use for overload protection.
  • Fuse has the ability to interrupt enormous short circuits without producing noise, flame or smoke.
  • Easy to removable for replacement without any damage to coming into contact with a live part.
  • The operation time of fuse can be much smaller than the operation of the circuit breaker. It is the primary protection device, against the short circuits.

Disadvantages of fuse:

  • It is not suitable for overload, at that time fuse blow off replacing of fuse takes time. During this period of lost power.
  • The protection of fuse is not reliable.
  • Low breaking capacity.
  • Fuse is slow compared to circuit breakers. It is a slow speed.
  • Considerable time is required in replacing a fuse after the operations, while the circuit breaker can be used multiple times.
  • It can't bear a surge current in the case of motor starting.
  • Fuse has not protected the circuit against under-voltage.
  • The fusing elements of the fuse are exposed to air, hence it is oxidized. Therefore the resistance of the element is increased and produced heat when the current passing through it.
  • There is a possibility of renewal by the fuse wire of the wrong size.
  • The current time characteristics of a fuse cannot always be correlated with that of the protective device.
  • When fuses are connected in series it is difficult to discriminate against the fuse unless the fuse has a significant size difference.
  • Fuse does not respond to the high voltage it only cares about current flowing and is not likely to melt and save the house in case of a direct lightning strike.
  • Accurate calibration of fuse wire is impossible, as longer fuse operates earlier than one of shorter length.
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Advantages and disadvantages of GiFi

GiFi is the efficient technology than the other wireless technology like WiFi, WiMax in terms of speed for transferring the videos within a second, less power consumption, highly portable, small size and also simplicity. For that, within a few years, we expect that GiFi to be a dominant technology. Here this post gives some benefits or advantages and drawbacks or disadvantages of GiFi technology to better understand this topic.

Advantages of GiFi:

  • It offers a very high data rate at lower interference.
  • The device is very cost-effective.
  • This device consumes very low power.
  • The GiFi chip is very small in size. Hence devices are also available in small sizes.
  • The deployment of the GiFi network and devices does not take much time. This system is very fast and also easy to install the GiFi network. 
  • It supports both service level and link-level security and hence it offers more security.
  • In GiFi technology secure encryption technology used to ensures privacy and security content.
  • It is a high-speed data transfer.
  • This device is highly portable and high mobility.
  • The data transfer rate of GiFi is 5-gigabit per second which is higher than other technologies. 
  • GiFi gives simple connection, improve the consumer experience, Also it highly portable and be constructed everywhere.
  • GiFi provides multimegabit wireless technology that is 100 times faster than short-range wireless technology such as Bluetooth and WiFi.

Disadvantages of GiFi:

  • It supports a short distance of about 10 meters due to high attenuation.
  • When we have used this system, the GiFi signals are easily blocked by objects due to lesser operating wavelength.
  • It is less secure compared to the LiFi system. 
  • RTS/CTS signals are not used in GiFi technology, unlike WiFi standards.
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LiFi advantages and disadvantages

LiFi stands for Light fidelity, it is a type of wireless communication technology that uses infrared light, the visible light spectrum, or ultraviolet radiation to transmit the data. Here this page covers almost the all advantages or benefits and also some disadvantages or drawbacks of LiFi technology.

Advantages of LiFi technology:

  • LiFi is easy to install.
  • The data transfer rate for internet applications is higher.
  • It uses the optical spectrum, and hence avoids crowded RF spectrum.
  • The LiFi technology devices consume low power for operation and hence used in IoT applications.
  • There is a great amount of energy reduction in the lighting industry which uses LiFi based devices.
  • It provides a high amount of security as data communication in line of sight Moreover LiFi signal cover low region does not pass through the walls. This will avoid unwanted access to the LiFi signal by unauthorized persons.
  • It mostly powered by LEDs so it is cost-efficient
  • The transmission of data is fast and easy.
  • The speed of LiFi is very high, and we can watch the video without buffering.
  • Risk-free LiFi utilized light wave which is harmless.
  • As it operates on the optical band which is not harmful like the RF spectrum. Hence there are no health concerns in LiFi based system.
  • It's main advantages its bandwidth 10000 times than the radio waves.
  • LiFi could be used in certain places sensitive to electromagnetic areas, such as airplanes or hospitals causing interference.
  • LiFi technology would be quite cheap to implement. It would be enough to incorporate a modulator to the light and to include the necessary receiver in the devices.
  • It would not always necessary for the lights to be on at a level perceptible by the human being. Their intensity could be reduced so that they could continue to operate in a non-visible way.
  • LiFi is more secure because light cannot pass through the solid and opaque structures. LiFi internet is only available to the users within a room and cannot be breached by users in other rooms or buildings.

Disadvantages of LiFi technology:

  • The presence of light is essential.
  • There should be a line of sight.
  • It doesn't work in a dim area.
  • The Internet can be used only where the light of the source device is available. One can not watch games and videos on the internet in the dark during the night before sleeping on the bed.
  • Though the installation is a very simple LiFi system require while new infrastructure, This will add the cost of people or companies wanting to take LiFi internet service.
  • Work better with fluorescent light and LEDs but very low efficiency with bulbs.
  • It can not be used in an outdoor environment like an RF signal. This is because of interference caused by sunlight and other optical sources present today. Moreover, it can be interpreted by the unwanted people if used outdoors,
  • It is lowe power, in order to available for LiFi internet services, light needs to be kept On throughout day and night. As the internet is in need of the hour, this will waste energy more than any other internet system.
  • Because it uses visible light, and light cannot penetrate walls. The signal range is limited by physical barriers while in more, secure this is limited range can be a bit annoying.
  • The light beam does not have a long-range. However, as in the case of overcoming obstacles, sensors could help increase distances.
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