Here I made a low cost wireless charger for my smartphone which is very convenient in case of wireless power transmission. Not only you can charge your phone but also you can power up any other 5V devices like USB light and USB fan. Wireless means; we don't need to connect any AC supply charging adapter directly with our phone, we just need to attach a receiver part with our phone. You can see the full designing process in the video.
Step 1: Required Components
Step 2: How It Works
The working principle is based on Faraday's law of electromagnetic induction where the power is transmitted in the form of magnetic field from the transmitter coil. The induced magnetic field is collected at the receiver module side and hence further it is rectified, filtered and regulated for DC 5V.
Step 3: Arrangements
Here are some pictures of my arrangements of components and charging system. The SMPS board is energized from AC power supply and its 12V output is connected with the transmitter side. At the receiver side, an USB female pin is used for connecting the mobile charging port.