Researchers develop wireless charger for smartphones


A brand new device has been developed by researchers which has the ability to charge about 40 smartphones at the same time, even when the power source is 5 meters away. On April 16, 2014, a team of professor of Nuclear and Quantum Engineering, Chun T. Rim showcased an improvement in the distance that electric power has the ability to travel wirelessly.

The team developed the Dipole Coil Resonant System (DCRS), which offers an extended range of inductive power transfer and can be located up to 5 meters between transmitter and receiver coils. The Massachusetts Institute of Technology (MIT) first introduced the Coupled Magnetic Resonance System in 2007 and the system used a magnetic field in order to transfer energy from a distance of 2.1 meters.

In recent times, the development of long-distance wireless power transfer managed to attract plenty of attention. The DCRS is smaller than the CMRS and the system has a low Q factor of 100. In addition to that, it is showing 20 times more powerful against changes in the environment and works better at the lower frequency of 100 kHz.

Several experiments were conducted which showed promising results. For example, for the operation of up to 20 kHz, the maximum output power was 1,403 W at a 3 meter distance 471 W at 4 meter. Such a development can prove to be a good gadget for people who are always on the go with wireless devices.

Photo Credits: Gizmag