LED light bulbs don't have power lines. Magnetic fields can be converted into electrical energy

Without plugging in the power cord, the LED bulb emits a brilliant glow! Yesterday (13), in the Innovation Laboratory of Cheng Cheng College of Southeast University, Ni Linyi, a major in electrical engineering and Electronics Science and technology, demonstrated a set of magic functions for power wireless transmission. In the just concluded 2014 Jiangsu undergraduate electronic design competition, this set of convenient and efficient equipment won the first prize. The winner was a celebrated "inventor", during the University, he obtained four patents.

The principle of the wireless transmission of electric energy is very simple, that is, electromagnetic conversion." Ni Linyi introduced, the transmitting coil of the direct current into a magnetic field and transmitted, and distance from the receiving coil half meter outside the "capture" of the magnetic field, and converted into electrical energy transmission to LED lighting, lighting natural lights. Of course, in the process of conversion and transmission, electrical energy will inevitably suffer some losses. How to minimize the loss and improve the conversion rate of power has become the key point of design. "Because the circuit design has been accurately analyzed, the energy conversion rate of the device is as high as 67%."." In the Institute of Zhang Zhipeng, Cao Chengwei teachers under the careful guidance, Ni Linyi, Sha Yangyang, Li Youjian three students through repeated experimental improvement, and finally won the 2014 Jiangsu university students electronic design competition first prize.

Modern electric equipment has brought great convenience to life, but a wire like spider is also a headache." Ni Linyi introduced, the wireless transmission of energy can solve this problem, household appliances can get rid of "small tail", children's electric toys do not have to change batteries. One can rest assured that the principle of electromagnetic conversion is used in the wireless transmission of electric energy, and that the human body reacts little to the magnetic field, so the system does not affect human health.

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