Telekinesis and Electromagnetic Induction

Working Principle

  Physicists have long known that energy can be efficiently transferred between two objects with resonant frequencies, whereas the interaction between objects with different frequencies is weaker.

  A singer can break a bottle filled with different amounts of water by singing, without affecting the other bottles. This is the same principle. It's like when we swing on a swing, we just sit on it and let our hanging legs swing synchronously to give the swing power. Wireless power technology is based on this principle. Similarly, wireless power technology also applies the principle of electromagnetic induction and related AC induction technology. It uses corresponding coils at the sending and receiving ends to send and receive the induced AC signals to charge. The user can charge their device by placing it on a "flat plate".

  Wireless Charger Schematic

  The wireless charging system primarily employs the principle of electromagnetic induction to couple energy through coils, thereby achieving energy transfer. When the system is operating, the input end supplies direct current. Two inductive coils couple the energy, and the current output from the secondary coil is converted by an accepting conversion circuit into direct current to power the LED lights.

  A changing magnetic field generates a changing electric field, and a changing electric field generates a changing magnetic field, both of which are related to their rates of change. The rate of change of a sine function is another sine function, so electromagnetic waves can propagate. The generation of induced voltage is related to the change in magnetic flux, so the changing magnetic field within the coil produces an induced voltage, thus completing the power extraction process.

Main Features

  1. Theoretically, wireless charging technology is harmless to human health. The resonance principle used in wireless charging is magnetic resonance, which is only transmitted between coils resonating at the same frequency, and other devices cannot receive the frequency. In addition, the magnetic field used in wireless charging technology is harmless to the human body. However, since wireless charging technology is a new charging technology, many people will worry about it, just like the initial appearance of Wi-Fi and mobile phone antenna poles. In fact, the technology itself is harmless.

2. Wireless charging technology transfers electrical energy by means of magnetic resonance between the charger and the device, with coils and capacitors forming resonance between the charger and the device.