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How to charge your phone using wireless charging. How to charge any smartphone wirelessly

Today it is already difficult for us to imagine our life without mobile gadgets. This has led to a huge number of wires accumulating near household outlets, among which it is not so easy to find the necessary “charging”. In this case, a wireless charger will help solve the problem. The principle of its operation is very simple - just place the gadget on a special panel for it to charge. The accessory is based on the operating principle of an induction coil. This technology is called Qi. She has become very popular lately. In 2015, the world-famous brand began selling furniture in which the module would be built wireless charging. Today, all flagship smartphone models support Qi. It is expected that transmitters or, in other words, modules will soon be found in airports, restaurants, cinemas, fast food outlets, shopping centers, which will allow you to charge phones and tablets at any time. In fact, this will make life easier for users of mobile gadgets. We are entering new era, where it is not necessary to carry it with us everywhere for all the devices we use.

Wireless chargers for gadgets with support for Qi technology

The wireless power standard is called Qi. In Russian the word is pronounced “Qi”. The standard bears this name in honor of the term of Eastern philosophy. It is developed by the Wireless Electromagnetic Power Consortium WPC. This organization unites global electronics manufacturers and sets itself an important task - to standardize the process of charging gadgets using the induction method.

In the near future, all devices will be able to be charged without connecting to the network. It's incredibly convenient. Each of us has at least once encountered a situation where... We have to urgently look for a way out. Soon, wireless charging modules will appear in all public places, as well as in every user’s home. At home, you can simply place the module in a convenient place, and it will never get lost, unlike wired “charging”. You just need to place the gadget on it and wait a bit until the battery capacity is replenished.

The operating principle of wireless “charging” is based on the properties of an induction coil to transmit electric current. In a school physics course, we were taught that when an induction coil is connected to a power source, a magnetic field arises in it, perpendicular to the turns of the coil. Thus, if you place two coils within the range of a magnetic field and at the same time connect one of them to a power source, then voltage will appear in the second coil. It is important to take into account the fact that the two induction coils should never touch each other. This simple principle underlies the operation of wireless chargers, supporting Qi technology.

There are two varieties of the Qi standard. The first involves charging at low power - 5 watts, and the second - at high power - 120 watts. High-power Qi is currently not produced by manufacturers due to objective factors. Using Qi at 120 watts, you can charge your laptop. Qi at 5 watts is used to replenish capacity and phones. It should be noted that tablets and smartphones require different amperages. A wireless phone charger produces a current of 1 ampere, and for tablet computer- 2 amperes. When choosing an accessory, be sure to pay attention to these characteristics.

Energy efficiency of the Qi standard

A modern wireless charger consists of two components. One of them is built directly into the gadget, which supports Qi and is called a wireless charging receiver. Essentially, it is a receiver that conducts electrical current to the battery. The second component is called the transmitter. If you mean buying a wireless “charging”, we are talking about a transmitter. They come in a variety of shapes and sizes. The most common types are round and rectangular transmitters.

To better understand how wireless charging works, you should consider that a magnetic field can transmit not only electric current, but also data about bytes and bits, which the developers of the Qi standard took into account. Interaction between the coils will occur only at the moment when the gadget with a built-in transmitter is close to the transmitter.

If the accessory for charging the gadget operates in the background, then the pulse sent every 0.4 seconds by the transmitter will not change the voltage in the coil built into the transmitter. We can conclude that a modern accessory can recognize in which mode to operate. As soon as a smartphone is nearby at a distance of several centimeters, the voltage in the induction coil will drop sharply and the device will switch to active work. As soon as the smartphone's battery is charged, a corresponding signal will switch the charger into the background. We can conclude that modern wireless accessories for replenishing battery capacity are energy efficient.

Is Qi technology safe?

Some users mistakenly believe that Qi wireless charging may be harmful to health. The fact is that magnetic radiation is not ionizing. In its effect on the body it is similar to a signal mobile communications, radio signal. In this case the signal mobile network, which comes from the tower, is stronger and has a continuous nature, while electromagnetic radiation disappears immediately after charging the smartphone battery.

The power of wireless chargers is 5 watts. It is not enough to have an effect on the human body. We can talk about a negative impact only if the power of such devices is 120 watts. But such models are not produced on an industrial scale. This explains the lack of wireless chargers for laptops. It is important to know that wireless battery charging technology has long been used in many models of electric shavers and electric toothbrushes, which once again proves its safety.

Which smartphones support wireless charging?

First of all, we want to note that not all gadgets today support the wireless charging function. Apple intentionally markets products that are not Qi compatible. In this case, we recommend purchasing a special case with a built-in induction coil.

Flagship devices generally always support Qi technology. These include such popular smartphone models as Samsung Galaxy S6, Sony Xperia Z4v, Samsung Galaxy S6 Active, Google Nexus 6, Motorola Droid Turbo, Nokia Lumia 930, Samsung Galaxy S6 Edge. Already, dozens of models of the most different manufacturers can be charged using a wireless accessory, which provides maximum ease of use for users.

Is it possible to make wireless charging yourself?

Wireless chargers have enough high cost, given that they are a regular induction coil. The question arises: “How to make a module with your own hands?” Basically, if you have knowledge of basic physics and special equipment for measuring strength and power electric current, it won't be a big problem. Fans of radio electronics are capable of assembling even different ones. simple devices, But ordinary users We do not recommend conducting such experiments.

On the aliexpress.com website you can find separate wireless device receivers for some smartphone models, including the , Google Nexus line. It is quite easy to install it on your phone. Under the cover of the device there are two contacts, which provide a positive and negative pole. All you need to do is buy and connect the receiver, after which you can conduct a wireless charging test. This solution is optimal if you somehow got a wireless charger, for example, you were given a gift, and your gadget model does not yet support the Qi function.

Wireless battery charging technology is gaining increasing popularity in modern world. In the future, it will be possible to replenish the battery capacity in many public places. It is expected that stadiums, parks, restaurants, cinemas, and fast foods will be equipped with wireless chargers. When purchasing smartphones, we recommend paying attention to support for the Qi function, which is present in all flagship models of 2015.

Wireless mobile charger is a very convenient modern gadget

Every year, wireless mobile chargers are gaining more and more popularity. On what principle does it work? How to choose the right model? And is wireless charging really better than classic charging?

Wireless charging of a smartphone or other gadget is carried out thanks to an alternating magnetic field generated by a special station
Principle of operation

Wireless charging of a smartphone or other gadget is carried out thanks to an alternating magnetic field generated by a special station. To recharge, the device must be equipped with an appropriate induction coil that receives the transmitted energy.

This wireless power standard is called Qi (pronounced “Qi” in Russian). In the future, the WPC plans to install stations in public places and then make them accessible to every user. Thanks to this, it becomes possible to charge the device from a distance, without lengthy searches for wired charging.

Advice! To charge your device as quickly as possible, keep it close to the station. The fact is that as the distance between them increases, the charging process will slow down.

Thanks to this gadget, it becomes possible to charge the device from a distance, without lengthy searches for wired charging. Disadvantages

Unfortunately, at this stage, wireless charging technology has more disadvantages than advantages. Here are just a few of these disadvantages:

low efficiency;
low speed;
relatively high cost;
The charging speed of the device's battery depends on the distance between it and the station.

For example, the coefficient useful action any wired charging is 97 percent. However, such results are not yet achievable with wireless technology. As a result, there is excess energy consumption, which is spent while the charging station is waiting for the device to be connected. In the case of wired charging, this problem is solved by simply turning it off, but much more is expected from Qi.

In addition, most representatives of this technology have a longer operating time (compared to classic charging). It is worth noting that some models charge the battery even faster, but to do this you need to place the device directly on the station. Is this kind of operation expected by users who buy wireless charging? Moreover, the cost of such devices is much higher.

Advice! When choosing the right wireless charging model, you need to consider the type of device for which it is intended. The fact is that the batteries of smartphones and tablets have a certain current strength, and a station with lower characteristics simply will not be able to charge them.

How to choose wireless charging?

Before you start choosing, check whether your device supports the Qi wireless power standard. To do this, use the search on the WPC Consortium website. It is also worth considering that for such charging you need two things: a station (transmitter) and a receiver in the device. Some models of smartphones and tablets are already equipped with such modules. If your gadget is not one of them, the receiver must be purchased separately.

Advice! If you iPhone owner, then, in addition to the wireless panel (that is, the charging station), you will also need to purchase a special case with the module. Connection is made via a standard charging connector.

Review of the best models
AuraDock

This wireless charger is one of the best in its class and is compatible with many devices.

Advice! If you want to use it in conjunction with an iPhone 6, you will need to additionally purchase a Lightning receiver-adapter. It plugs into a standard charging connector. Unfortunately, due to its large size, it cannot be hidden inside the case.

AuraDock wireless charging is one of the best in its class

Main characteristics:

current - 1 A;
voltage - 5 V;
location of the smartphone when charging - any within 0.4-1 cm;
charging speed - 4 hours.

The device will indicate the completion of the charging process using the corresponding indicator. It is worth noting that Auradock can be used in combination with tablets, smartphones and other gadgets that support the Qi standard.

This wireless charger costs $100. If you use an iPhone 6 or iPhone 6 Plus, you will need to pay an additional $20 for the auraTag-i6 and i6P adapters.

Thus, AuraDock is a universal wireless mobile charging, which can be used in combination with all Qi-compatible devices.

This wireless charging is based on the same electromagnetic inductive method, but it works according to a different standard - PMA 3. It is less common than Qi, but is also in demand.

Advice! Before purchasing a Powermat Ring, please ensure that your device is PMA 3 compliant.

Charging Powermat Ring connects to microUSB or Lightning port

First of all, it is worth noting the attractive appearance of this wireless charging. It is made in the form of a ring that connects to a microUSB or Lightning port. To charge your smartphone or other wearable device, you need to place it on the Powermat station. Please note: it operates from a 220 V network. When connecting wireless charging at 380 V, the device may be damaged.

Compared to the previous gadget, Powermat Ring has a more attractive price. Users will need to pay around $100 for the entire kit: $55 for the Power Ring and $44 for the Powermat. This price can be explained by the less popularity of the PMA 3 standard, which runs on fewer (compared to the Qi standard) number of gadgets.

Ultra-Slim Qi-Enabled Wireless Charging Pad

This budget charger from Anker boasts a long list of supported devices and a stylish appearance. The station is disk-shaped and equipped with an indicator and a microUSB port.

The transmitter costs $27.

Ultra-Slim Qi-Enabled Wireless Charging Pad

Advice! To use this wireless charging, you also need to purchase a Qi receiver.

As for Fuel iON, it can be used to charge a smartphone, tablet or other wearable device much faster than its Qi-based counterparts. This is made possible by using a highly efficient magnetic connection that transfers energy directly to the device.

To charge your phone with FUEL iON, you will need:

Magnetic Charging Pad (station in the form of a flat disk);
Magnetic Charging Stant (the same charging station, only in the form of a vertical stand);
adapted case FUEL iON iPhone 6 Case.

The FUEL iOn device has the lowest cost of the presented models

It is worth noting that these devices are officially approved and recommended for use by Apple. Thus, in the event of a malfunction, the manufacturer's warranty will not be voided.

The system costs $10.

This little-known mobile charger boasts a reasonable price and a wide list of supported gadgets. It is worth noting that to operate the system on a specific smartphone, you need to purchase the appropriate receiver.

The delivery set includes a stand, power supply (5 V, 1 A), microUSB cable and an individual receiver for each phone model. The system costs $35. Users will also need to pay approximately $10 for the receiver.

The device is made of white glossy plastic and looks like a rectangle with beveled edges measuring 150x80x10 mm. Please note: there are no rubberized elements at the edges of the station that would hold the smartphone in one position, so the fixation leaves much to be desired. When a device is connected, the system beeps sound signal and changes the indicator color to blue.

To operate the PowerQi T-100 system on a specific smartphone, you need to purchase the appropriate receiver

The receiver is a flat antenna and a small board with a controller, which must be installed under the cover of the smartphone on the appropriate connectors.

Advice! This model of wireless mobile charger is an ideal option even for those devices that are not equipped with special connectors. In this case, the connection is made via microUSB.

The average battery charging time using the PowerQi T-100 is 3.5 hours. Considering the lower cost (compared to other wireless charging systems), this model can easily be called one of the best candidates.

The model boasts compact dimensions and high charging speed. This development from Samsung Group is also distinguished by its reliability and versatility: it is compatible with almost all existing smartphones.

Price: $30.

Samsung PG920 features fast charging speed
Tylt Vu

The latest candidate, Tylt Vu, is attracting users good design and convenient form. Its distinctive feature is that while charging the smartphone is at an angle, thanks to which it can be used without disconnecting from the power source.

Price: $38.

Tylt Vu device

Advice! When choosing the right wireless charger, it is best to purchase universal gadgets. Thanks to this, you will be able to use it even after purchasing a new smartphone.

Comparative test of inexpensive Qi chargers

5 candidates were selected for the test at a cost of 7-15 dollars. All of them provided an output current of 5 V 1 A, the only difference was in the input current: two models required 5 V 1.5 A, and the other three required 5 V 2 A. In addition, not a single representative of brand companies participated in this test . Some of the candidates were even sold without retail packaging, as it would increase the cost of the device.

Advice! If you purchased one of these models, the first step is to replace the USB cable. The fact is that the accessories included in the kit have low throughput power (at best - 500 mA), which reduces the performance of the station.

For the test, each phone was discharged to 14%, after which it was turned off and left for 5 minutes - until it cooled to room temperature. After switching on, the “Airplane” mode was activated.

As a result, we found out that:

the cheapest charger had a stable shape and large dimensions, thanks to which a phone of any size could easily be placed on it;
beveled Qi charging showed the greatest power, which means it can charge a smartphone even through covers and thick cases;
budget charger Q8 charged the smartphone faster than others (in just 2 hours) and at the same time showed the second power according to the test results - 770 mA;
To charge the phone from 90 to 100 percent, you need to wait another 30 minutes.

If you are in a hurry, you can safely interrupt charging when you reach 90%. The fact is that to fully charge the battery you will need to wait at least half an hour

Advice! If you are in a hurry, charge your phone only to 90 percent - this battery charge will be enough to solve most problems.

Let's sum it up

The wireless mobile charger is based on an alternating magnetic field, which is created by a special station and transfers energy to the phone. To receive it, it must be equipped with a special induction coil (receiver).

No matter which wireless charger you buy, you will encounter the following disadvantages:

low efficiency;
low speed;
depending on the distance between the station and the telephone.

In addition, most wireless chargers have a high cost (40, 50 or more dollars), which makes their purchase unaffordable for most users. In this case, you can pay attention to Chinese analogues (for example, Q8), which are practically in no way inferior to branded competitors. Immediately after purchase, replace standard USB cables as they have low bandwidth.

If you are in a hurry, you can safely interrupt charging when you reach 90%. The fact is that to fully charge the battery you will need to wait at least half an hour.

Of course, if you are at home and not in a hurry, this is not difficult. However, during the day, when you are constantly on the move, you can turn off the device at 90% charge. This will not harm the battery, and you will save half an hour of precious time.

Nowadays, technology has become available that allows you to charge phones without using a cable. Its advantage is that this procedure is faster and easier, and you do not have to connect your smartphone to the network every time - you just need to place the device on top of the wireless charging pad.

There are various competing standards for this technology. The most popular of these is Qi, which is now supported by companies such as Samsung, Google and Nokia. However, more and more manufacturers are starting to use it in one form or another.

Which phones support wireless charging?

Some smartphone models have built-in wireless charging (their ratings are presented below). Other devices will need replacement for this back cover or housing. Qi components are produced based on specific phones, so if you connect them yourself, you should make sure that you choose a compatible model.

If a dedicated wireless charging cover is not available for your smartphone, you can use universal adapter, allowing you to use this technology even for older devices.

What do you need to know about wireless charging?

As noted above, the leader is currently the Qi standard, which is used in most Android devices today. The technology works by using magnetic induction, allowing energy to be transferred from the platform to the phone's battery. The Qi standard, whose name means “air” or “flow of spiritual energy” in Chinese, was created in 2008 and began to be developed simultaneously with the participation of 206 companies, including Microsoft, Samsung and Sony.

When talking about which devices support wireless charging, we should also remember the less common PMA standard. It also works due to magnetic induction, but its distribution range is slightly lower. In June 2014, the developers of the PMA standard partnered with Duracell to place charging platforms in select public places in the United States to promote the technology. If this idea proves viable in the future, it is quite possible that large quantity smartphone manufacturers will begin to use this standard.

If we talk about which phone models support Qi-standard wireless charging, then the choice will be very large. Even if your Android smartphone doesn't have this technology built-in, you can purchase a universal Qi receiver that costs only about $15. Despite its bulkiness, it will add significant convenience to you when using the gadget. The device attaches to the back of your device, which can then be placed on any Qi-compatible charging platform. Regarding the question of which phones support Qi wireless charging, it is worth noting that there is a commercially available receiver for the iPhone (models 5, 5s and 6), which also receives positive reviews. Its cost is about $30.

Which phones support wireless charging (list of gadgets)

For those interested in the new technology, it will be useful to know the rating of devices that have built-in Qi standards.

The most famous model in this regard is the one that is currently available for around $200. According to user reviews, this is one of the best devices on Android basically. This device is also a leader in the use of wireless charging. The smartphone is compatible with both Qi and PMA technologies. Thanks to its sleek design, good speed and large 16-megapixel camera, this phone beats the iPhone in some ways. Commercially available Qi memory has good long cable to connect to the network. Its edges glow light blue while charging and turn green when charging is complete.

Among the devices that can be charged wirelessly are the following:

Samsung Galaxy Note Edge.
Samsung Galaxy Note 4.
Google Nexus 6.
Motorola Droid Turbo and others.

Other Samsung models

Analyzing which Samsung phones support wireless charging, one cannot help but remember that this model also simultaneously supports both standards - Qi and PMA. The attractive curved body shape and convenient screen allow owners to instantly access messages and other important data, and the built-in adapter does not impair the use of the device in any way. While the gadget itself can be purchased for about $300, the charging Pad costs about $40.

Also belongs to this category of devices. This smartphone with an innovative curved screen offers very strong graphics performance on a bright display. Its screen size is significantly larger than other devices, so battery drain is correspondingly faster. In this model, wireless charging is not directly integrated into the back phone, but there is a special Samsung Qi-enabled cover on sale that replaces the standard back of the device. This accessory costs approximately $25 and is available in two color options: jet black and snow white.

If you ask which phones support wireless charging in general, you will notice that this technology mainly affects gadgets with high hardware capacities, for which the ability to quickly charge them is especially important.

Based on this, it is not at all surprising that it is also equipped with the described technology. This gadget is distinguished by high multitasking, fast and high-quality camera and high brightness of the 5.7-inch screen. In order to charge it wirelessly, you will need a special case. It's available for about $30 and comes in two colorways.

However, Samsung is not the only manufacturer using this technology on a large scale. What other brands of phones support wireless charging? Let's look at it below.

Other brands

Google Nexus 6 has an almost 6-inch screen and is equipped with a high-power processor, so it especially needs the ability to quickly and efficiently recharge. Qi technology is built-in here out of the box, so there is no need to buy an additional cover or case. This gadget is quite expensive - about $500, but fans highly appreciate its hardware capabilities along with Android 5.0. All this is offered to users high level comfort. Despite the fact that there is no special platform for wireless charging, the universal component will do the job perfectly.

When talking about which phones support wireless charging, we can’t help but mention a model like the Motorola Droid Turbo. This smartphone with a screen of just over 5 inches has a 21 megapixel camera and many built-in functions. Its battery life is approximately 9 hours during active use, so the built-in Qi technology is very useful. There is also a special charger for this model, which places the phone in a vertical position. This means that you can continue to use the device while charging.

Brand "Sony"

As already noted, the new technology is most actively used by manufacturers such as Samsung, Google and Sony. Which Sony phones support wireless charging? First of all, this is the Sony Xperia Z3 - a waterproof gadget that, with active use, lasts up to 12 hours without recharging. Its screen is highly bright, and its speakers provide loud, luxurious acoustics. Despite the fact that its cost is about $400, the device is widely popular. The wireless charging cover will have to be purchased separately, and it costs over a hundred dollars.

Is it possible to adapt your smartphone?

What phones support wireless charging without having the technology built-in? If your device does not natively support Qi, you can separately purchase and install an adapter on it and use a universal wireless charger. Depending on the brand of the gadget, you can connect the adapter via a micro-USB port (on Android platform) or “zipper” (on iPhone).

Universal wireless charging adapters

If your phone is not listed above, then you need a universal adapter and a wireless charger. You can get them for phones with micro USB ports (like Android) and lightning ports (like iPhone). In this way, you can update and improve almost all devices available for sale. If we talk about, for example, what Xiaomi phones support wireless charging, then with the above method you will be able to charge even 5-year-old models without a cable.

Universal charger

Once you've made sure that your phone supports wireless charging (either through built-in functionality, using a special cover, or by connecting an adapter - it doesn't matter), you'll need to purchase a wireless charger.

Nowadays, there are many such Qi technology devices available in different sizes, shapes and colors. You can buy such a component not only for use at home or in the office, but also for a car, and even portable accumulator Qi. If you purchased a smartphone that supports wireless charging, it is advisable to choose a charger specially designed for it. If you don’t have one or you’ve updated your gadget yourself, finding a universal device won’t be difficult.

Technologies make the life of a modern mobile device user more convenient in a variety of aspects. If until recently the main competitive positions were concentrated in the devices themselves, today manufacturers are paying more and more attention to accessories and peripheral components.

One of them is How it works this device and how can it be useful to a modern user? The answers to these questions lie in the very concept of communication, which excludes wired connection. Wireless contact is designed to save people from the hassle of inconvenient connectors. In many ways, this idea was realized, but such devices were not without their drawbacks.

Features of wireless chargers

In the first years of the spread of telephones for cellular communications manufacturers had to make reservations when positioning such gadgets as mobile. The fact is that they were and remain mobile only conditionally, since they are dependent on the charger cable. Wireless charging has made it possible to remove all the conventions of such a designation for mobile phones and smartphones.

How does it work this device? All technologies on which such charging are based are based on distance principles. It is important to note that the spread of technology wireless communication and the transfer of information has not been something new and surprising for a long time. Radio signal modules, Bluetooth and Wi-Fi sensors, network access points - all of this, to one degree or another, allows the transmission of information signals.

However, the novelty and fundamental difference with the wireless principle of operation lies precisely in the possibility of transmitting energy over a distance to power batteries.

Principle of operation

The most common design of such devices involves the presence of induction coils. In fact, they act as receivers as well as translators of electrical signals. When the charger itself is connected to the mains, a voltage is generated, after which a magnetic field is formed around the transmitting coil. Actually, after entering this field of the phone, wireless charging is activated.

How does recharging work? Due to the transformation of electromagnetic waves, which are transferred to the battery as electricity. In this case, the target object for power supply can be not only a phone or smartphone. Developers are guided by broad standards of batteries and batteries, which also apply to some models of tablets, cameras, players and other equipment.

Depending on the device model and its characteristics, different charging conditions are possible. For example, to understand how it works, you should familiarize yourself with the Qi energy transmission standard. Such a transmitter is capable of replenishing the battery capacity at a distance of 3-5 cm, that is, practically the mobile device must be in contact with the charger.

Wireless charging safety

The ability of chargers to transmit energy over distances rightly raises questions regarding their safety for users who, in any case, will be in the range of the induction coils. However, manufacturers claim that such devices do not cause any harm to health.

Examples include electric shavers and brushes that operate on the same principle of electromagnetic fields as wireless phone charging. How does the charging panel work in contact with other equipment and does it harm it? This question is also raised, but the manufacturers deny such a danger.

The fact is that the maximum power at which such devices operate is no more than 5 watts. This is not enough to have a negative impact even on devices sensitive to electromagnetic fields.

Devices from Samsung

One of the most successful developments in the Korean wireless charging segment is the Wireless Charging Pad. This is an optimized version of the basic family, which has eliminated the common problems of most similar first-generation devices. One of the main advantages of this model is the ability to interact with the phone’s battery regardless of its position relative to the functional platform.

In its commercial form, this version is represented by wireless charging that supports the WPC standard. This technology is different in that it is suitable not only for Galaxy smartphones, but also for most other Samsung phones. In addition, as the manufacturer notes, charging can replenish energy to half the capacity in just a few minutes.

Apple devices

It must be said right away that Apple products do not support wireless charging technologies. However, the manufacturer is looking for alternative ways providing this opportunity to its users.

In particular, he recommends using accessories in the form of cases from Duracell. Therefore, the question of whether wireless charging works through a case will have a positive answer in the case of iPhones. If this method does not suit you, then you can use an iQi format receiver card. It connects via a special Lightning connector and is also hidden under a standard smartphone case.

Devices from Cota

Cota employees are also developing interesting proposals. They are not just mastering the concepts of specialized charging panels for mobile devices, but are striving to expand their range of action as much as possible. For example, in addition to phones and tablets, such a device can fill wearable electronics with energy. Moreover, for this it is not necessary to bring the device close to the active panel.

A small device the size of a bread box works at a distance of 10 m. The question arises: “How does wireless charging work with such a radius? Is it effective enough?” And here it’s worth returning specifically to wearable technology, including: smart watch, bracelets and wristbands, since it is in working with these gadgets that the device demonstrates the most impressive performance. Obviously, phones and smartphones require more time.

Disadvantages of wireless charging

Like all technologies that radically change approaches to the use of technology and electronics, wireless devices charging also has many disadvantages. Of course, the user receives a significant advantage, since he does not have to bother with wires and connectors, but the efficiency of filling the power supply with this method is noticeably reduced.

Most devices provide a charge over a longer period of time compared to the classical method. In addition, there are ergonomic inconveniences that modern wireless charging cannot yet get rid of. How does a wired charging system work? It requires connection to the device, after which it can be used for the same 30-60 minutes required to replenish energy. However, in the case of wireless technologies, not only does the charging time increase, but it also eliminates the possibility of using the device during this period.

Directions for further development

Actually, all directions of development of chargers operating without wires are aimed at eliminating the above-mentioned shortcomings and generally improving the basic characteristics.

The considerable weight of such devices also remains a big problem. In the mid-segment, the average device is a platform that can hardly be called mobile. However, it is worth noting here how wireless works. Samsung charger S6 and devices for younger versions of the smartphone from the Charger Kit line. These are panel charging accessories that are attached to phones like protective devices and cases. This interface configuration minimizes the size of the charging infrastructure, but is not highly efficient.

Conclusion

It cannot be said that the emergence of wireless chargers has caused a stir in the market of accessories for mobile devices. Despite the novelty of the concept, the spread of this product is hampered not only by ergonomic shortcomings, but also by the cost at which wireless phone charging is sold.

You can make a similar device with your own hands at a lower cost. To do this, it is enough to organize a blocking generator with the function of an energy transmitter. As experienced craftsmen note, such a scheme will only require homemade reel copper-based and one transistor with accompanying wire infrastructure. Another thing is that in terms of reliability and safety, such a device will be noticeably inferior to the same branded models from Samsung.

Modern technologies, especially in the field of electronics, are developing very quickly.
What seemed like something fantastic just a few years ago is now becoming very real. The well-known furniture company IKEA has been selling furniture that has built-in panels for charging your phone for about a year now. Every day wireless transmission electricity is becoming more and more real and easier to use. And more and more people want to have a wireless charger, as it can greatly facilitate the process of charging a smartphone.

What is the technology of transmitting electricity through the air?

On this moment there are quite a large number of various that allow electricity to be transmitted through the air. To perform this operation, a laser, a sound wave, as well as many other physical phenomena can be used. Despite such a wide variety of ways to transmit electricity through air, there is only one technology that is used commercially. This technology is based on the research of Tesla and Faraday, who worked towards transmitting electricity through the air through electromagnetic induction.

It is thanks to the improvement of their developments and ideas that wireless phone charging and many other devices that use electricity transmitted through the air can operate today.

As in any other area, airborne transmission has its own standards. The most widespread standard of this technology is the standard that has been developed by the Wireless Power Consortium for 7 years. The standard itself is usually called the Chinese word “Qi”, but if you try to pronounce it in English language, it will sound something like “chee”, as for the Russian language, the most correct pronunciation would be “Qi”.

This standard is good because it is supported by almost all modern smartphone manufacturers, with the exception of rare cases. Already, many airports, restaurants, train stations and other similar establishments are equipped with special charging stations that allow everyone to charge their smartphone. This applies more to developed countries, however, as you know, modern technologies are rapidly conquering the whole world, and therefore such charging stations will soon be found even in the most remote corners of the planet.

New furniture from IKEA is a prime example of how this technology is being actively implemented. The furniture contains special panels that allow very fast charging through the technology of transmitting electricity through the air. Purchasing such furniture can make charging your phone a lot easier for everyone. Wireless charging qi is actively moving around the world, even Apple could not refuse it, which, as you know, always prefers to stand on the sidelines and offer its customers only a unique and unlike anything else product.

How does wireless charging work? Surely this question interests many people; it should be noted that the principle of its operation at first glance is quite simple and understandable. Charging according to the WPC standard implies the presence of special induction coils both in the smartphone itself and in the charging station. Each of these coils has its own role: one of them should act as a receiver, while the other is used as a transmitter of wireless electricity. If the charging station is connected to the network, a certain voltage will arise in it, and a magnetic field will appear within the range of the coil that transmits electricity. If a smartphone enters the magnetic field thus formed, it receives the energy it needs from it by converting electromagnetic waves in its receiver coil into electricity.

Thanks to wireless charging, there is no need to connect special cable to smartphone

The WPC standard allows a distance between the wireless charger and the smartphone itself to be no more than 3-5 cm. Thus, we can say that you should place the phone on the charger, in which case the efficiency of such charging will be 75-80%, which is slightly less than the efficiency wired charging. Therefore, if you need, for example, good wireless charging for your iPhone, be prepared for the fact that you will always have to put your smartphone in a special place where it can be recharged fairly quickly.

Advantages and disadvantages of wireless charging

For the average user, the only and most important advantage of using a wireless phone charger is that there is no need to connect a special cable to the smartphone. Despite the fact that this type of charging mobile device is called wireless, in any case, you cannot get rid of the wire, since the charger itself is connected to the outlet.

As for the disadvantages, you need to remember that such chargers usually cost more than cable ones, and charging a smartphone with them takes about 2-3 times longer. However, as a new and interesting technology, and also as a solution in some unusual cases (for example, car wireless charging), this method recharging your smartphone can be a very interesting and practical solution.

Charging a smartphone using wireless charging takes about 2-3 times longer

Is wireless charging harmful to your health?

Every time one or another appears new technology, more and more people are interested in how harmful it is to health. It should be noted that there are a huge number of myths around new technologies; even in our time there are many people who believe that Cell phones are capable of causing enormous harm, and the computer actually kills 10 people every day. In fact, these are myths that have no basis in reality. And this can be proven from the point of view of elementary logic, since if this were really so, no one would have lived on our planet for a long time, probably. And since there are more and more people every day, and they use electronics more and more often in their Everyday life, its harm is clearly exaggerated.

However, every electronic device affects our body to one degree or another, and this also applies to a wireless charger. Let's try to figure out how strong this influence can be.

Wireless charging will not harm your health in any way

It should be noted that most smartphone manufacturers say that the WPC standard does not pose any health hazard. The developer of the standard, the Wireless Power Consortium, says approximately the same thing. They are actively joined by manufacturers of electric toothbrushes and electric shavers, who use similar charging principles in their devices.

Such opinions look very convincing, let's try to speculate on this topic. Electromagnetic waves, which are actively used in the wireless charging device, are in the spectrum of non-ionizing radiation. Non-ionizing radiation has a much lower wave frequency than, for example, dangerous x-rays. Non-ionizing radiation is generally considered completely safe and is used in many modern devices. This radiation is used to transmit a Wi-Fi signal; it is also used for mobile communications and in many other cases. Thus, a huge number of waves of this spectrum pass through a person every day, even if he does not use electronic devices. Moreover, they almost always passed through a person, since the Sun emits a fairly large number of just such waves every day.

That is why clear evidence of harm to health from WPC has not yet been found, and, as practice shows, if a person starts using a wireless charger, he does not faint the next day, and his health does not deteriorate over time. Therefore, you can safely start using such devices; wireless charging for iPhone 6 will not harm your health in any way.

Modern devices that support Qi wireless charging

As mentioned above, almost all modern smartphones support the WPC standard. This standard is also supported by some other devices. If you want to know the details and specifics on this issue, you can always find a list of all devices that support this standard on the official website of the Wireless Power Consortium company.

Do not forget: in order to wirelessly charge a device, you must have both an energy receiver (the device itself supports the WPC standard) and an energy transmitter. Most modern phones already have special charging modules, which are energy receivers, therefore, the only thing that is required from the user of such a device is to select a high-quality wireless panel, which is the energy transmitter into the device.

Almost all modern smartphones support the WPC standard

In the event that a particular phone or other wearable device does not support the WPC standard, then this can be dealt with very easily. The most simple solution in this case, you may need to purchase a special attachment or case that contains a charging module. This charging module can be connected to any phone using a regular charging connector. For example, this may be necessary if you are interested in wireless charging for an iPhone or for some other device that does not support the WPC standard.

The most popular wireless chargers

At the moment, there are quite a large number of wireless chargers manufactured by various companies. Let's take a quick look at which chargers are currently most popular among owners of smartphones and other wearable devices.

Samsung Wireless Charging Pad charges your smartphone almost regardless of its position on the panel itself

One of the latest inventions from Samsung. This almost universal wireless charger has gained popularity due to the fact that it charges the smartphone almost regardless of its position on the panel itself. It should be noted that this device is capable of supporting not only the WPC standard, but also some other, less popular wireless charging standards, such as AW4P and PMA. Thus, even if your particular phone does not support the WPC standard, this charger is still capable of charging it, and without any additional modules or anything else.

This charger is very good decision in a number of cases, the average cost of such a device is approximately $50.

Judging by the reviews on Amazon, this is the best wireless charger that has a number of advantages and at the same time has a very low price. One of the features of this device is the included USB cable, which allows you to connect the charger to a laptop. The average cost of this charger is approximately 10-15 dollars. At the same time, the model is very reliable and can serve for quite a long time. Smartphones with wireless charging that use this device for charging will charge fairly quickly and will not experience any problems.

PowerBot is the best wireless charger that has a number of advantages and at the same time has a very low price

So far, smartphones and other Apple devices do not support many wireless technologies. Therefore, in order for wireless charging for iPhone 5s to be possible, it is necessary to use all kinds of additional devices, such as cases and various connectors. One of the most interesting solutions in this case may be an iQi receiver card, which can be hidden under any regular smartphone case.

This solution allows you to fully cope with the problem of lack of support for wireless charging in Apple equipment. Such a card is quite inexpensive, usually its price is about $35, but it demonstrates very good, long-lasting and reliable performance. Therefore, if you are the owner of Apple equipment, such a card can be very useful to you.

Nokia DT-910 allows you to charge smartphones very quickly

This wireless charger is quite popular. It has a very affordable price, while allowing you to charge smartphones very quickly. In addition to all its advantages, wireless charging nokia, also has a number of additional functions that make its work even better and higher quality. Therefore, this option (taking into account all its strengths) can be more useful than ever in a number of cases.

Whether or not to use a wireless charger is, of course, up to you. Some people think that this should be done because this type charging a smartphone is more convenient, and in general, this is the future. This opinion is quite reasonable, since according to all forecasts, powerful chargers should appear in the near future. wireless stations, which are capable of charging not only a smartphone, but also almost all other devices in the house, and there will be no need to put this or that device on a special panel, since the charger itself will charge everything within a certain, rather large radius.

If such technologies appear in the near future, then many modern wireless chargers, such as wireless charging for the Note 4, could very quickly become a thing of the past, as a much more universal solution will appear.

iQi Wireless Charging Receiver demonstrate very good, long and reliable performance

It should also be noted that the technology of wireless electricity itself is not as complicated as it might seem. That is why many people can do wireless charging with their own hands, since it is very interesting to do something like this yourself. And, as practice shows, many people really succeed in this, which allows them not to spend money on buying wireless chargers at all, but to make everything completely on their own.

Wireless charging basics was last modified: April 29th, 2016 by Ekaterina