Abstract: This Project provides a comprehensive overview of contactless charging devices, exploring its principles, forms, Types, applications, advantages, and challenges. it focuses on designing and building a wireless charging device that can be powered by a battery source, also known as a contactless charging device. The transmitter unit (input) and the receiver unit (output) make up this gadget. The device receives a 220V AC mains signal as input, which is rectified or converted to a DC signal. The gadget thus has two power sources (battery and mains). The backup batteries are then charged with this DC signal, which is also fed into a 48 kHz oscillating circuit. This circuit uses a square wave signal to create an alternating signal, which is then passed through an induction coil to create an electromagnetic field that transfers power. This is electromagnetic induction’s basic idea. The coil at the receiver, which is placed in the path of this field is induced with the alternating current (AC) which is then rectified again to DC before it’s passed through a 5V bulk converter circuit which regulates the output of the device to 5V which can be able to power different portable devices efficiently. Additionally, the device is noiseless and the output is taken through the USB port provided.
Keywords: Contact-less Charging, Transmitter, Receiver, Batteries, Power, DC Signal
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DOI:
10.17148/IJARCCE.2025.14308
