Wireless Gadgets Charger Circuit

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Introduction

Regardless of whether we like it, the world is moving toward wireless technology. It’s challenging to keep up with how quickly technology is developing. Wireless technology is unquestionably the future in both household and commercial settings. Therefore, various equipment and gadget manufacturers endeavour to make their products wireless. The charger is one of those gadgets. So, in this tutorial, we will make a “Wireless Gadgets Charger Circuit.”

We are making a small prototype, considering how we can make the chargers wireless. The circuit requires very few easily available components. Also, the circuit is simple to make for beginners too

Hardware Required

S.no	Component	Value	Qty
1.	Tx-Coil (Coil copper wire with 6CM dia / 5 turns)	–	1
2.	NPN Power Transistor	BD139	1
3.	LED	–	1
4.	Ceramic Capacitor	0.22uF, 1nF, 4.7nF	1, 2, 1
5.	Resistor	1K, 5K	1, 1
6.	Battery	9V	1
7.	2-Pin Connector	–	1

Circuit Diagram

Working Explanation

To make this Wireless Gadgets Charger Circuit, we need to make two different circuits:

A transmitter circuit
A receiver circuit

A Transmitter Circuit

We built this circuit to generate magnetic flux at a high frequency. 20 SWG enamelled copper wire, 6 CM in diameter, and five turns are used to create the centre-tapped coil. With the aid of Resistor R1, Capacitors C1, and C2 Resonator components, the BD139 NPN transistor operates as a Switching device and oscillates high-frequency signals. Here, LED 1 shows that this circuit has a bias present.

A Reciever Circuit

The bridge rectifier using four diodes is connected to the 20 SWG enamelled copper wire, 6 CM dia, and 15 turns coil. Filter capacitors C1, C2, and C3 are then connected across the output terminals of the bridge rectifier. Finally, the IC 7805 positive voltage regulator regulates the DC supply from the rectifier, and the output is prepared to charge devices.