Wireless charging system described by using the method of inductive coupling. In this paper, oscillation circuit converts DC energy to AC energy (transmitter coil) to transmit magnetic field by passing frequency and then induce the receiver coil. The properties of Induction coupling are wave (magnetic field-wideband), range (very short cm), efficiency (hight) and operation frequency (LF-band several hundred kHz). The paper shows as a small charging for 5V battery of phone in this method. The system bases on coupling magnetic field, then designed and constructed as two parts. There are transmitter part and receiver part.
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