Automatic Street Light Using Ldr Circuit Diagram. With this simple automatic street light control system we can control a 230v street light using a relay. In fact you can this circuit for implementing any type of automatic night light.
L d r light dependent resistor 2. The 220 volt ac bulb will automatically turn on after the sunset and turn off after sunrise. Here based on our room condition the threshold value we took is 100 for the ldr sensor.
The circuit uses a light dependent resistor ldr to sense the light when there is light the resistance of ldr will be low.
Automatic street light control system sensor using ldr transistor bc 547 very simple. We all have seen street lights on different streets which are provide light in the night. Components required circuit diagram. When there is low amount of light the light automatically glows and when there is sufficient amount of light it automatically turns off the light.
