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Published by on November 13, 2020

Thank you my fellow brothers, Your email address will not be published. Try this circuit with other resistances as well, (e.g, 1KΩ, 10KΩ and 100KΩ, etc), USB Mini Fan (Homemade, very simple Using PC 12V Fan Motor), Pictorial Story: (Click images to enlarge), Components & Schematic Circuit Diagrams for Automatic Street Light Control System. How can I improve this simple DC project with AC 240V.thanks. Swap out the low wattage components used in this example with some higher wattage ones, replace the battery with a 120/6 volt transformer + a rectifier and filter capacitor & put the coil for a contactor that would switch the mains power for the street light on and off in series with the transistor. { i hope u can understand my problem }, i need some guidance about ma final project…it’s about street lights, well,I think I got it, please help to get enough guidance on vehicle movement street light project. sir, i have a problem i made “automatic street light circuit” according to circuit diagram 1 but there is a problem is that when i cover LDR the LED off and when i did not covered it its ligt on how can i solve this problem plz reply me quic as posible am waiting….! In this tutorial we'll learn how to make a light sensor circuit using LDR (Light Dependent Resistor), 555 timer IC and a few other electronics components. This circuit detects light incident on the LDR and turns on LED whenever the intensity of light is greater than a certain level. light decreases the ldr's resistance right??? and the other components? Connect a resistor 330R across positive terminal of battery (topmost row of breadboard) and anode terminal of LED (Light emitting diode) & Connect the cathode terminal of LED to Collector pin of transistor Q2. Our website is made possible by displaying online advertisements to our visitors. please help. There is no doubt any expert eye can detect its mistake. Study another comprehensive article on how to design energy efficient automatic street light using micro-controller here : http://engineerexperiences.com/auto-street-light.html. In Electronics Store, You can Easily find a Battery charger about (6-9V, 0.6 – 1.2A), I would also likely to know about the use of transistor in the circuits…….. The circuit of Light Sensor Switch Circuit is shown in figure 1 and is built around very popular operational amplifier IC, light dependent resistor (LDR), a general purpose PNP transistor and few other components like resistor, relay etc. I personally liked using the services of electricians-capetown.com for their great services, as they are truly professional, knowledgeable and trustworthy. This is Dark Sensitive ldr circuit. The resistance range and sensitivity of a photoresistor can substantially differ among dissimilar devices. The automatic light sensor circuit can be designed using various electrical and electronic components. Circuit Diagram 1. It automatically switches OFF lights when Sunlight fall on it  ( i.e on LDR ) e.g in morning, by using a sensor called LDR (Light Dependent Resistor) which senses the light just like our eyes. Dark Sensor using Arduino; Circuit Description of Light Sensor Switch Circuit using LDR and 741 IC. Circuit Diagram Working. Connect 6V battery terminals to the circuit as show in fig and see the output. Automatic Street Light Control System. How to Calculate/Find the Rating of Transformer in kVA (Single Phase and Three Phase)? Connecting wires- Use single-core plastic-coated wire of 0.6mm diameter (the standard size)-You can use wire that is used for Computer Networking. Use torch light or Lighter if the LED glows in less darkness. In the morning time, this sensor has a low resistance around 100Ω. I am working as an ship electrician , My problem is that the Insulation Resistance Monitor is Normal but the phase indicator bulb (the 3 bulbs) the two are not so bright then the other one is very bright , can you please help me to correct this problem..any reply from you sir is highly appreciated.. relay insted of led??? Circuit Diagram of LDR and LED. Light Sensor Circuit Working Operation. We can save power in and outside the premises by using this circuit. At Night time all LEDs glow and In Daytime when light falls on LDR all LEDs Switch off Automatically.Project of Light activated switch circuit diagram using transistor. Follow, © Copyright 2020, All Rights Reserved 2012-2020 by. You explained everything quite intelligently. Means not procedure but working. We have tried this one in this tutorial but you can also try the second one mentioned below. Magnet levitation simple Electrical Project, Mini Air-Cooler System from 12V Fan (Homemade form Trash), LED GLOWS EVEN IN LESS DARKNESS. Thus, the power supply flows through the LDR & ground through the variable resistor and resistor as shown in the above light sensor circuit. on Step 4. what to do?
, Check your connection…btw..I will Upload step by step video.. :). If incident light on a photoresistor exceeds a certain frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. :)
I am an electronics engineer, hi can you tell me the function of each element you have used like what is the use of transistors in this ckt and resistors …..i would be very grateful if u wud help me out.
thnx in advance, can we use this ckt for ac 230v or more voltage


, ya but u have to tuse more elements likr step down transformer,relay,555IC for ac source.
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