Wireless Power Transmission(STEAM Education)

Project : 25

Wireless Power Transmission

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Project Aim:

To understand wireless energy transfer through mutual induction.

Components Used:

1.     Power Supply

2.     Transistor NPN

3.     Resistor 1K

4.     Coil Center-tapped (transmitter)

5.     Coil (receiver)

6.     LED

7.     Connecting Wires

Circuit Diagram:

Connection Procedure:     

For Transmitter Circuit:

Step 1: Plug one end of the Center-tapped Coil (Transmitter Coil) to (Pin 65), plug the center end to (Pin 67), and another end to (Pin 69).

Step 2: Connect the positive terminal of the power supply (Pin 62) to the center end of the Transmitter Coil (Pin 68).

Step 3: Connect one end of the Transmitter Coil (Pin 70) to the collector of the NPN transistor (Pin 31).

Step 4: Connect the emitter of the NPN transistor (Pin 29) to the negative terminal of the power supply (Pin 59).

Step 5: Connect the base of the NPN transistor (Pin 30) to one end of the 1K resistor (Pin 5).

Step 6: Connect the other end of the 1K resistor (Pin6) to another end of the Transmitter Coil (Pin 66).

For Receiver Circuit

Step 7: Plug one end of the Receiver Coil to (Pin 73) and the other end to (Pin 75).

Step 8: Connect one end of the Receiver Coil (Pin 66) to the anode of the LED (Pin 43).

Step 9: Connect the cathode of the LED (pin 44) to the other end of the Receiver Coil (Pin 68).

To test the wireless transmission, apply power to the circuit and take Receiver Coil near to Transmitter Coil, then observe if the LED lights up, indicating successful energy transfer through mutual induction between the transmitter and receiver coils.

Explanation:

In this project, we explore wireless energy transfer using mutual induction. The circuit comprises a transistor, battery, transformer, and LED connected in series. It operates based on the principle of mutual induction, where a change in current in one coil influences the current and voltage in another coil. Initially, when power is supplied to the circuit, the transistor acts as a switch, activating and allowing the supply to flow to the transformer. The transformer then transfers the voltage to the secondary coil through mutual induction, without any physical contact. Consequently, the LED lights up, indicating the successful transfer of energy wirelessly.

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