Ldr Automatic Street Light Circuit Diagram. Working of the automatic street light using 555 timer circuit. Automatic street lights turn themself on and off automatically by sensing intensity of light with the help of lights sensors.
T he circuit diagram present here is that of a street light that automatically switches on when the night falls and turns off when the sun rises. For this purpose automatic street lights projects have been designed. Working of the automatic street light using 555 timer circuit.
The working of circuit is very much easy to understand.
The working of circuit is very much easy to understand. In this circuit we used ic lm358 which is basically an operational amplifier. Here two bc547 npn transistors are used to operate the relay. The circuit uses a light dependent resistor ldr to sense the light when there is light the resistance of ldr will be low.
