LDR is a photoresistor is a light-controlled variable resistor. It should include content sheet, circuit diagrams, introduction, brief explaination of parts, applications, advantages and disadvantages, final conclusion. Q2 stops conducting and the relay is switched off. The rectified signal is flattened with the C1 electrolytic capacitor. also approximate cost in making it…. I NEED FULL INFORMATION ABOUT THE STREET LIGHT CONTROLLER LIKE THE CKT DIAGRAM, BLOCK DIAGRAM ITS INTRODUCTION, APPLICATIONS,BLOCK DIAGRAM AND GIVE THE INTRODUCTION ABOUT ALL COMPONENTS. Could you please tell me the voltage and wattage rating of lamp used in this project!!!!!! Can u suggest any additional features that can be added to the circuit above? My project is almost done but i have to sumbit a project report on the same and there is very little information about this topic. also approximate cost in making it…. When the LDR will detect a high light density the LED will automatically turn off and the LED turns on at a low light density. It is very urgent to me to make a exhibit to my school anual exhibition so please help me sir.Please, Sir, i have no facilitys to watch videos on youtube, so can please send me the circute diagrame and the camponants with valus wanted to make the circute please sir. The output of this network is given to non-inverting input as shown in figure 1. sir i m a student of electrical engineering 6th semester;;;; i m interestd in that project; i want the circuit ,block diagram of that project as well as applications, I AM STUDENT OF THE ELECTRICAL ENGINEERING. So, because of The analog value changes according to the resistance of LDR. Best Resistor Kits Thus, output of IC1 become high. The light sensitive level to operate the relay can be adjusted with preset R2. can you kindly elaborate your requirement, Sir i am polytechnic stud. Pin 1 of the IC should be in the top left-hand corner. , you can use this for Automatic light switch for Street Light . You can directly download actual size PCB diagram from the link given below. …, respected sir ,i want the ratings for this components like resistors and ldr etc. LDR = Light Dependent Resistor = Photoresistor. If you have any doubt please contact. i need to know abuot cad format for this circuit sir please reply. Hi Nandita for traffic sensing you can use Doppler Shift sensing method or IR movement detector or any movement detector. PLEASE! LED indicates the activation of relay. plz send me the report of this. hello sir once no movement is detected it will again switch off. I am a student of diploma in electricals and electronics 4th sem. Please give the calculations of 9v dc suply to the circuit. Pls this automatic switch with relay, how do I power it? This Light Operated Relay Circuit using LDR is very interesting. Electronics Repair Tool Kit Beginners >sir why we use 9v battery in the circuit. Sir, It’s not possible to find BC 107 in my country. When output of IC1 is high, the transistor drives to off state. hello, (why you require 15volts for the LED ?). althoug all the circuit is operating in AC main current,plz tell me breafely why we use battery in the circuit. Sir, I haven’t heard from you yet. As we know the property of LDR that during the day time, its resistance is low, the voltage at the non-inverting input (i.e. althoug all the circuit is operating in AC main current,plz tell me breafely why we use battery in the circuit. can you tell me the required items with specific details… I AM STUDENT OF THE POLYTECHNIC 6th SAM. The figure shown here is scaled in 200%. sir please design the circuit diagram using this IC. How can I modify this circuit so that I can use the LDR system to automatically switch on the light with decrease in Visible light! will tell u how it went related 2 ur ckt…, sir , So that relay remains de energized. Prplease send me catv stb schematic diagram with desciption. this 1 project is very simple and easy……..4 ec student 3 rd sem…. How the Light Operated Relay Circuit works? Hence, the voltage at  non-inverting input pin 3 of the IC LM358 decreases than the inverting input pin 2. plz post it as early as possible sir, sir can we use a solar panel instead of 9vdc supply. For description we had divided the entire circuit into three main sections. is 100K preset value of R2 or it is a set value??? becou’s thise are not available nearly in my village (above circuit added components works surly) i take thise project in my class It is always possible to replace the rectifier diode with a diode bridge to obtain a full wave rectifier. Here accuracy is not very important as the circuit is only a binary control if it measuring analog information and calculating then an opamp is a must. Can the relay be swapped for an LED. In fact you can this circuit for implementing any type of automatic night light. Soldering Iron Kits my email add: tofman2020@yahoo.com Required fields are marked *, Best Rgb Led Strip Light Kits I’d be really grateful. and then switches off by itself after the vehicle passes away? i) Fixed Resistor – having a fixed value of resistance Hi sir. Adjust R2 for you requirement. if it is not then what is the set value??? This Automatic If you got the satisfactory result, then your LDR is good. Best Gaming Monitors, Circuit Diagram of Automatic Street Light Controller Switch Circuit, i) Fixed Resistor – having a fixed value of resistance. The 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. Sir,i need complete working procedure of this project,pls do reply. Traffic light is designed with two timer ICs 555 and …, Simple two stage resistor capacitor coupled amplifier using npn transistor …, We can create graph by using received serial data from …, Printed Circuit Boards are very crucial in Electronics circuit design …, LTC3442 is Micropower Synchronous Buck-Boost DC/DC Converter Integrated Circuit with …, Soldering is one of the basic skills needed for to …. three terminal side is used for output, while the other in between two terminals of output is used as common. This makes transistor Q1 OFF which in turn makes Q2 ON. Sir, I assembled the above circuit along with the additions suggested by Sri Seetharaman (May 14, 2011 above -to avoid chattering and transient response)and using the light in my courtyard and it is working excellent.

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