Experiment - 4 :- Simple AC/DC Circuit

 

Simple AC/DC Circuit

Objective

Construct a simple circuit using an AC/DC power supply, a lamp, a fuse, and a switch.

Key Concepts

This experiment demonstrates the fundamental components of an electrical circuit and how they work together to control the flow of electricity.

• AC/DC Supply: The source of electrical power for the circuit. AC (alternating current) and DC (direct current) are two types of current, but for this experiment, a DC source (a 9V battery) is used.

• Lamp (Bulb): An electrical load that converts electrical energy into light and heat.

• Fuse: A safety device that protects the circuit from excessive current. If the current gets too high, the thin wire inside the fuse melts and breaks the circuit, preventing damage to the components or a fire hazard.

• Switch: A device used to open or close a circuit, thereby controlling the flow of electricity to the load.

• Hook Up Wires: Conductors that provide a path for the electricity to flow from one component to another.

Tools & Equipment

• Lamp (9-25V) - 1 No.

• Fuse - 1 No.

• Switch (SPST 240V/6A) - 1 No.

• Battery (9V) - 1 No.

• Hook up wires - as required

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Procedure

1. Gather Materials: Collect all the necessary tools and equipment listed above.

2. Prepare Wires: Carefully strip the ends of the insulated wires to expose the conductive metal.

3. Install Battery: Place the battery into the battery pack, ensuring the positive and negative terminals are correctly aligned.

4. Connect Power Supply: Attach the prepared wires to the terminals of the battery pack.

5. Connect to Bulb Holder: Secure the free end of one of the wires to the metal screw of the bulb holder.

6. Test the Circuit (Pre-connection): Ensure all connections are secure and the battery is providing power.

7. Install Safety and Control Components: Connect the switch and fuse into the circuit.

8. Complete the Circuit: Attach an additional wire from the fuse and connect it to the switch.

9. Connect the Lamp: Hook up the light bulb to the remaining terminals of the circuit as shown in the provided diagram.

10. Final Test: Use the switch to turn the circuit ON and OFF, observing the lamp's response.