Wireless power Juice of the session (A)

Using electromagnetic induction, we will continue to recharge your pavilion zv6000 battery . With some minor equipment that is already possible. Induction in a big way, however, could burden the people.

With the electric toothbrush works for example, already: If your Compaq Battery is empty, place the device easy to Grips, and even the energy to be recharged. It is as if by magic, as an electrical contact between the charger and toothbrush does not exist. The wireless transmission of energy works on induction. According to the ideas of some scientists, this principle could in future also in many other electronic appliances as standard. Even the electric cars of the future could boost their energy again, without a man needs to lend a hand and make a cable connection.

The principle of induction was the Briton Michael Faraday discovered in 1831: To a leader who is traversed by electric current forms a magnetic field, recognized the physicist. This magnetic field generated in a second, closely adjacent conductor also has a current flow and can therefore be used to transfer energy. From this discovery, finally emerged the idea of using magnetic fields for energy transfer. Precisely what also manufacturers of electrical appliances such as Acer Battery , HP Battery,and Lenovo Battery in mind. They have joined forces in Wireless Power Consortium (WPC) and to create a common goal set in the course of the year 2010, a uniform standard for wireless recharging of appliances. The reported technology journalist Michael Bird in an article in the April issue of the magazine "Bild der Wissenschaft".

A Ladematte for all devices

A single charger that can recharge the thinkpad t61 battery of mobile phones, digital cameras and MP3 players. It would consist of a mat with incorporated coils generating a magnetic field. The corresponding small appliances need to recharge itself, of course, be equipped with the appropriate technology. Such mats are sold even though isolated, but the device before loading must be provided so far still with a special adapter spool. How quickly the uniform of WPC targeted technical standard for the induction technology will prevail in the market, there will be Menno Treffers, Chairman of the WPC did not specify. "The integration of the coils in the devices such as cell phones or cameras, but is not a problem," says strike will be responsible for the standards at Philips, told Bild der Wissenschaft ".

With the distances between the coils of no more than a few millimeters, the transfer is to achieve the a1185 battery efficiency of around 70 percent. For longer distances, however, the efficiency goes down dramatically. Even more power especially when traveling over greater distances hopes that the physicist Marin Soljacic of the Massachusetts Institute of Technology (MIT) with his idea, which he now wants to also develop a technical solution. The two coils here are coordinated so that the magnetic field can only transmit at a given frequency energy. Through a clever construction it can reach so that the corresponding receiver coil but receives a lot of energy, other objects in space, however, very little. Thus Soljacic could bring in the lab already has a distance of two meters, a 60-watt light bulb to illuminate.