Automatic Street Light Using BC547 Transistor & LDR | radiomarket.in

The Automatic Street Light using BC547 Transistor is a basic electronics project designed to automatically control street lights based on day and night conditions without using any microcontroller. This simple and cost-effective circuit uses a BC547 NPN transistor and an LDR (Light Dependent Resistor) to switch lights ON at night and OFF during the daytime.

The working principle is based on light intensity detection. During daylight, the LDR has low resistance, keeping the BC547 transistor in the OFF state, and the street light remains OFF. At night, when light intensity decreases, the LDR resistance increases, activating the transistor and turning the street light ON automatically.

This project is ideal for school science exhibitions, basic electronics learning, and beginner-level engineering projects. It helps students understand core concepts such as transistor switching, LDR working, automatic control systems, and energy saving techniques.

Suitable for school students, Diploma, ITI, and beginners, this automatic street light circuit demonstrates a low-cost, reliable, and energy-efficient solution for street lighting. The project can be enhanced by adding relay modules, solar panels, or motion sensors for improved functionality.

Available at radiomarket.in, providing quality components and student-friendly electronics project solutions.