Automatic street light using ldr and 555 timer pdf

Posted on Tuesday, May 4, 2021 7:07:24 AM Posted by SofГ­a G. - 04.05.2021 and pdf, pdf 1 Comments

automatic street light using ldr and 555 timer pdf

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Automatic Street Light Controller Circuit Using Relay and LDR

We have designed a system where there is automatic turning on and off of the light whenever required. When darkness is detected then the sensor circuit gets activated and switches ON automatically and when there is other source of light during daytime, the street light gets OFF.

Also this circuit can be used to adjust the sensitiveness of the light. The circuit is cheap and economic and can be made easily. On large scale the circuit can be used with solar cell as energy source and big light source can be used at night and instead of manual operation automatic operation can be implemented. Automatic street light control system is a simple and powerful concept, which uses transistor as a switch to switch ON and OFF the street light automatically. By using this system manual works are removed.

It automatically switches ON lights when the sunlight goes below the visible region of our eyes. It automatically switches OFF lights under illumination by sunlight. This is done by a sensor called light dependent Resistor LDR which senses the light actually like our eyes. By using this system energy consumption is also reduced because now-a —days the manually operated street lights are not switched off properly even the sunlight comes and also not switched off properly even the sunlight comes and also not switched on earlier before sunset.

In sunny and rainy days, ON time and OFF time differ significantly which is one of the major disadvantages of using timer circuits or manual operation.

This project exploits the working of a transistor in saturation region and cut-off region to switch ON and switch OFF the lights at appropriate time with the help of an electromagnetically operated switch.

The system itself detects whether there is need for light or not. When darkness rises to a certain value then automatically streetlight is switched ON and when there is other source of light, the street light gets OFF.

R Light Dependent Resistor 2. IC NE with Base 3. Two 10Kohm resistors 6. Voltage Regulator IC All the working of this circuit depends on the working of the timers Ic.

In this circuit pin, 3 produce output which has just two states high and low. In this circuit pin, 4,6 and 8 are connected to the power supply. Here we use LDR to detect the presence of light which is formed a potential divider circuit with the help of 1k ohms resistor. LDR is a special type of resistor whose value depends on the light.

A system where there is automatic turning on and off of the light, there by saving electricity. An LDR is a component that has a variable resistance that changes with the light intensity that falls upon it. A photoresistor is a light-controlled variable resistor. The resistance of a photoresistor decreases with increasing incident light intensity; in other words, it exhibits photoconductivity. The timer IC is an integrated circuit chip used in a variety of timer, pulse generation, and oscillator applications.

The can be used to provide time delays, as an oscillator, and as a flip-flop element. A light-emitting diode LED is a semiconductor light source that emits light when current flows through it. The color of the light is determined by the energy required for electrons to cross the band gap of the semiconductor.

They are super compact and do not emit heat, most commonly used in emergency lightings, automotive tail lights. The nine-volt battery, or 9-volt battery, is a common size of battery that was introduced for the early transistor radios. It has a rectangular prism shape with rounded edges and a polarized snap connector at the top. This type is commonly used in walkie-talkies, clocks and smoke detectors. A resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element.

In electronic circuits, resistors are used to reduce current flow, adjust signal levels, to divide voltages, bias active elements, and terminate transmission lines, among other uses. A voltage regulator is a system designed to automatically maintain a constant voltage level.

It may use an electromechanical mechanism, or electronic components. Depending on the design, it may be used to regulate one or more AC or DC voltages.

Electronic voltage regulators are found in devices such as computer power supplies where they stabilize the DC voltages used by the processor and other elements. Open navigation menu. Close suggestions Search Search. User Settings. Skip carousel. Carousel Previous. Carousel Next. What is Scribd? Uploaded by Mayuri Sinha.

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Street light circuit.

Did you ever think that how the street lights automatically turn ON in the night and turn OFF automatically at morning? Many people have a phobia of darkness, so to assist them in such situations, we have explained a simple circuit that will automatically turn on the street light consisting of LEDs or bulb coupled with relay. It is lit well enough to see the objects nearby. This circuit is very easy to work around and also it is battery operated. The power consumed by the circuit is very low because of the very few components used in the circuit. The whole circuit is based on IC LM, which is basically an operational amplifier that is configured in a voltage comparator. LDR Light depending resistor , whose resistance is based upon the quantity of the light falling on it, is the main component for sensing the light.


Such As Flood Lights, Street Lights, Factory Lights, Halogen Lights And Its Accessories.


Electronics Project How To Make An Automatic Street Light Using 555

Automatic Street Light control system using Timer IC- The Automatic street light control system is seriously an amazing project and no doubt this is one of my favorite projects. This is a very small project build around a few electronic components. In this project, you will learn how to make an automatic street light control system using timer IC and an LDR. You can also use this circuit in lawns and in laser-based security systems.

We have designed a system where there is automatic turning on and off of the light whenever required. When darkness is detected then the sensor circuit gets activated and switches ON automatically and when there is other source of light during daytime, the street light gets OFF. Also this circuit can be used to adjust the sensitiveness of the light. The circuit is cheap and economic and can be made easily. On large scale the circuit can be used with solar cell as energy source and big light source can be used at night and instead of manual operation automatic operation can be implemented.

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The term LDR is known by many names such as a light-dependent resistor , photoresistor, photoconductor, the photocell. The term photocell is most widely used in datasheets as well as instruction sheets for domestic gear.

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Please Note: these are affiliate links. I may make a commission if you buy the components through these links. I would appreciate your support in this way! The Timer Power-ON delay circuit can be used in various projects where for a certain amount of time you need to turn on a specific load. The aim of this project is to turn on the load any time you press the button or activate a sensor for a few seconds.

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