First Class Automatic Street Light Circuit Diagram
So here in this project we are going to make a simple automatic street light circuit using ldr and relay which will turn on and off the light bulb based on the lights in surroundings.
Automatic street light circuit diagram. So the voltage drop across pot r2 will be high this keeps the transistor q1 on. Light depending resistance it is a special type of resistance whose value depends on the brightness of light which is falling on it. This is a circuit diagram of automatic street light.
It has resistance of. In fact you can this circuit for implementing any type of automatic night light. After that there is led is connected with 330 ω resistor but be care full the light emitting diode.
Circuit diagram of automatic street light control is given below. Some applications of this. This circuit is quite simple and can be built with transistors and ldr you don t need any op amp or 555 ic to trigger the ac load.
Here we have used an ac bulb as street light. The collector of q1 bc107 is coupled to base of q2 sl100. Let try to understand this circuit.
Don t worry about negative side and the positive side of the resistor. This is very simple circuit with few electronics components. Any general purpose switch can be used.
The circuit uses a light dependent resistor ldr to sense the light when there is light the resistance of ldr will be low. First start form battery. At first direction there is a resistor of 330 ω and on the other direction 220 ω resistor is connected.