Street Light Timer Circuit Diagram. The circuit employed here is an uncomplicated light dark activated switch and contains a relay at its output which simply turns on off a street light and further can be extended to control any electrical appliance in a household. Ldr is a light dependent resistor whose value depends on the quantity of the light which is falling on it.
Street light controller circuit. Ldr is a light dependent resistor whose value depends on the quantity of the light which is falling on it. So i will explain here the circuit implemented by using 555 timer ic.
The above circuit diagram is for the 1 minute timer circuit.
The circuit is actually a dark detecting circuit or we can also say it dark light sensor circuit the two transistor used in the circuit are working as switches. From the controller the lights will be on in the places of the movement when it s dark. The resistance of ldr increases in darkness and reduces in presence of light. Circuit diagram figure circuit diagram of automatic street light controller.
