Project - Analysis of a practical automotive wiring circuit

1) Major elements in the diagram:

• Battery
• Fuse
• Ammeter
• Switch
• Lamp
• Relay
• Ignition Coil
• Distributor
• Starter Motor
• Current and Voltage Regulator
• Sensors
• Actuators
• Generator
• Wires
• Horn

2) Purpose and Working

Battery : As mentioned before, the battery stores chemical energy and converts it into electrical energy to power the car's electrical system.

Fuse : If there is a surge in current or a short circuit, the fuse will melt and interrupt the current flow, preventing damage to the wiring and other electrical components.

Switch: The switches in the car allow the driver to control various electrical circuits, such as the headlights, taillights, wipers, and radio. For example, when the driver turns on the headlights switch, the circuit is closed and current flows to the headlights, turning them on.

3) Fuse Rating for 10A Load:

The fuse rating should be slightly higher than the maximum load current.

10A load: Choose a fuse with a rating of at least 12A to provide a margin of safety.

4) Battery Recommendation for 500W Load:

Hint- take battery voltage =12V

power = 500W

Current = P/V = 500/12 = 41.7A

If you need it to run for an hour, a 12V 41.7 amp-hour (Ah) rated battery is the minimum. Recoment minimum Capacity is 42 Ah .

5) Connected Parallel

Taillights: These are often connected in parallel because each light needs to operate independently. If one headlight burns out, the other one will still function.

Horn : Allowing them to function independently.

6) Connected Series

Battery and Starter Motor: These are connected in series because, the starter motor requires a high voltage to crank the engine.By connecting them in series, the voltage across the two components adds up, providing the necessary starting power.