An Automatic Night Lamp Project, LDR (Light Dependent Resistor) Based, is a science project that involves creating a simple electronic circuit that automatically turns on a lamp or light source when the ambient light levels drop to a certain threshold, typically during nighttime or in a dark environment. This project is often used as an educational tool to teach the principles of electronics, sensors, and basic circuit design.
Here’s a basic description of the project:
- Light Dependent Resistor (LDR): An LDR is a sensor that changes its resistance based on the intensity of ambient light. It is the key component in this project.
- Transistor: Typically, a bipolar junction transistor like a NPN transistor is used as a switch to control the lamp.
- Resistor: A resistor is used to set the sensitivity of the LDR and control the base current of the transistor.
- Lamp or LED: This is the output device that you want to control. It can be an incandescent bulb, LED, or any other light source.
- Power Supply: A power source like a battery or DC power supply is required to operate the circuit.