文档介绍：安徽建筑大学
毕业设计 (翻译)
专业电子信息工程
班级 09城建电子②班 e two winding transformer, is something of a wireless power supply. Rechargeable electric toothbrush is a typical case, but the use of electromagnetic coupling way has a lot of disadvantages, not high magnetic permeability of magnetic core as a medium, the lines of magnetic force can lead to serious spread into the air, resulting in a decline in transferring efficiency, especially when two coil from down badly. So this way is only suitable for small power, close communication, for high-power, long-distance wireless power supply is not so good this way. 2, photoelectric coupling photoelectric coupling is to convert electrical energy to light energy, such as laser, energy transfer to the destination by light into electricity. The wireless power supply technology is more intuitive, photoelectric coupling also can well restrain interference, and the application of the photoelectric conversion technology is relatively wide. The unidirectional, but made by light transmission determines its transfer path has certain defects, there can be no obstacles in the transfer path. So this kind of technology, also has the corresponding defects. 3 people on magnetic resonance and magnetic resonance coupling has a noun is unknown, its principle is similar to the principle of sonic resonance, if the two media have the same resonance frequency, can be used to transfer energy. Magnetic resonance chamber are currently studying a way of power transmission. In 2008, Intel engineers had to the technology as the foundation, in according to the power three feet lit a 60 w light bulb.
In September 2010, Fujitsu, wireless charging technology using magnetic resonance between the charger and the device of the air transport charge, the coil and capacitor in resonance between the charger and the device. Fujitsu said the system can be widely used in the future, such as for electric