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How Wireless Mobile Chargers Work

Monday, March 23, 2015 6:19:25 PM America/Los_Angeles

Wireless charging is generally considered a safe and convenient way to charge electronic devices. Experts suggest that by eliminating the use of a cable or a physical connector, wireless charging offers several benefits such as better safety, cost effectiveness, and efficiency.

For cell phones, wireless charging is a reliable and safe way transfer power to your smartphone and ensure the device is charged and ready to go whenever the user requires it.

Wireless Charging 101

It is the transmission of electric current to a receiving device using a power source without the utilization of a physical connection. The transferred electrical current re-charges or charges the battery of the target device.

Today, scientists give great emphasis on using this technology to charge smartphones. Experts believe wireless charging has the potential to redefine our use of cell phones because it is more convenient than current wired methods. This is why an increasing amount is being invested in wireless mobile chargers. Considering the following benefits, it’s easy to see why:

  • It provides greater ubiquity and convenience when charging mobile devices, since users won’t have to go on a “search mission” every time they misplace their charger

  • It reduces the cost related to maintaining mechanical connectors. This includes keeping their prongs straight and clean

  • The method lets users charge or power their mobile devices safely, without worrying about lengthy cables people can trip on

  • It eliminates sparks associated with loose contacts

How do they Work?

Let’s have a closer look at wireless mobile chargers. It relies on the principle of magnetic resonance, a process where a current is sent between two bodies through coils. Here are the 5 key steps of doing this process:

Step 1:

The mains voltage is changed into high freq alternating current (AC).

Step 2:

The current is sent to a transmission coil through a transmission circuit. This induces a time varying magnetic field in the coil.

Step 3:

The magnetic field generated in the transmitter coil expands to the receiver coil. However, this takes place if the coil lies within a specific distance of it.

Step 4:

The magnetic field then produces a current in the receiver coil. The procedure that transmits energy between the receiver and transmitter coil is resonant, or magnetic, coupling.

Step 5:

The current flowing in the receiver coil changes into direct current by the receiver circuit. This current is used to charge the battery.

This process enables the safe transfer of power through an air gap as well as through any non-metal object that may be present between the coils. As such, these non-metal objects could be granite, or plastic. Additionally, the inclusion of larger or extra transmitter coils can increase the range of the power transfer.

Wireless mobile device charging unit works very efficiently and effectively. While they already provide a host of benefits, there is still a long way to go before these devices become the preferred choice of billions of mobile device users.

Visit to find chargers at available prices.

Posted in News By

rouzbeh ghoreishi