Wireless charging for mobile phone using microwaves

Wireless charging for mobile phone

Energy transfer wirelessly - have not utopian panacea, not science fiction and cyberpunk stories. However, this trend in the minds of scientists, inventors and engineers developed nearly a century - his father is rightly considered a genius Nikola Tesla (that it would take and move in our time, huh?!) - But thanks for that.

Wireless charging is able to speak senior, "this thing!" And the truth is that many models of smartphones can be recharged simply by connecting the module. For those who really zadolbalo untangle cords chargers (which are often confused and even fingers to boot) on a daily basis, offers wireless charging reasonable and effective alternative.

Wireless charging for mobile phone - what do we know about this charger?

Wireless charging for mobile phone 2When you hear the term "wireless charging", in the opinion it is reasonable to come charging your phone at any distance from the charger. No, good people, do not confuse yourself, because it's not wi-fi and its derivatives, although it sounds something similar. This error, which is a necessary evil - that is, provides us with a simple terminology for easier understanding of the technology. In fact, the "wireless charging" is nothing more than a "magnetic induction charging."

Chargers magnetic induction, as the name implies, are equipped with powerful electromagnetic coil, which actually generates the field. At that time, when you put the phone to the charger coil is activated and starts charging the device through utilization of the magnetic field generated by the coil.

This is not the same as that in the case of a magnetic charging cable, which is equipped with some models Mac. These cables use magnets for attachment to the ports, but from point A to point B current flows through the normal conduction, rather than magnetic induction.

How quickly will charge the phone?

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Recharge rate depends entirely on the strength of the current and voltage. Multiply these two values, and get the effective power in watts, which, actually, is transmitted from the charger to the phone. 12-volt charger that generates 500 mA nominal current, will produce maximum power recharging 6 W rated power.

Speed ​​wireless charging

Phone battery capacity is measured in mAh (milliamp-hours), and therefore, on the other hand, the average charger shows how many units under any voltage and amperage through it delivers a constant current.

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Conventional wire chargers deliver the rated current of 1 A at 5 V voltage. This means that the battery is 3000 mAh battery recharged in approximately 3.5 hours. Most wireless chargers also follow this standard (5 V voltage), but reduces the amperage (the highest rate of ≈ 0,65 A). Naturally, because of this, and the battery itself is 3000 mAh will be charged longer (from different manufacturers will be different times, but on average count on an extra 40 minutes).

Another device using induction charging?

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Wireless charging, in this sense, as we understand it today, is an innovation that its appearance should be grateful smartphones. Here, for example, in electric toothbrushes wireless charging technology is used for quite some time. To avoid circuit, charging ports of these devices at risk of contact with water, protected under a thick body. Thus, an inductive - only type charging which is possible for such devices.

Security questions

Once uproar due to the fact that several users have become victims of fraud: they charge their phones via USB-cable, and the attackers took advantage of this connection to access the device.

Wireless charging for mobile phone 6Abroad is fairly common practice when visitors restaurants or cafes offer to recharge their smart phones via wireless chargers, so it seems logical that many people are asking whether the same thing occur with the use of wireless charging?

No, can not. The problem with the wired chargers was that they used a USB (ie, all 5-pin), and it allows some charger plugs into your phone and, roughly speaking, to interact with it almost like a computer.

In the case of wireless charging in the inductor is only one goal: to activate the magnet so that the phone can "nourished".

Of course, things will change if the smartphone makers decide to allow the use of wireless phones chargers as point data exchange. But while this is not visible even in the near future, so threatening the integrity of the data no.

Do you use a wireless charger, or good old familiar wire? Would like to try wireless charging? In general, what do you think about this technology?