Automatic Street Light Circuit Very Easy
Today I am going to make a circuit of automatic street light.This circuit will work automatically.In the morning light will be close automatically.This circuit is working with LDR.
This picture shows the pinouts of BC547 Transistor.
As pin-1 is Collector of this transistor,
Pin-2 is Base and Pin-3 is Emmiter of this transistor.
Connect LED to the transistor.
Connect -ve pin of LED to collector pin of the transistor as shown
Next we have to solder LDR.
Solder LDR to Base pin and emitter pin of the transistor as shown
Next solder 20K resistor to base pin of transistor and in the +ve pin of LED as you can see
Now we have to solder battery clipper wire to the circuit.
Solder +ve wire of battery clipper to +ve pin of LED and
-ve wire of battery clipper to emmiter pin the transistor as shown
Connect battery to the battery clipper and observe that when light is on the LDR sensor then LED is not glowing and when light is not on the LDR then LED is glowing.
Uses: We can use this circuit as a street light because it will automatically ON and OFF.In the morning when light will come on the LDR then LED will not glow and in the night light will not fall on LDR then LED will glow in the night and vice versa.
Basic Electronic Project – Automatic Street Light Control Circuit
Following is yet another simple Electrical/Electronics project for automatic street light control systems especially for students, newbies and hobbyists.
Features:
It is a dark detector circuit based on LDR and a transistor (BC-547 NPN) which automatically switches ON and OFF the street light system.
It automatically switches ON street lights when the sunlight goes below the visible area of our eyes. (e.g. in the evening after sunset).
It automatically switches OFF the lights when sunlight falls on it (i.e. on LDR) e.g. In the morning, the sensor called LDR (Light Dependent Resistor) senses the light just like our eyes and deactivates the circuit.
Related Simple Projects:
Simple DC Motor (Electrical Project)
Simplest DC Motor Ever.
Advantages:
The automatic operation of street light controlling systems help to reduce the energy consumption as compared to the manually operated street light controlling operations. This is because there is a delay in the earlier switching operations both in morning (during sunrise) and evening (during sunset).
On sunny and rainy days, ON and OFF time is noticeably different which is one of the major disadvantages of using timer circuits or manual operation for switching the street light system.
Enough... Now let’s begin the step by step guide to make the circuit of the basic project.
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Home>Electrical Project>Electronics Engineering Project>Automatic Street Light Control Circuit using LDR & Transistor BC 547
ControlElectrical ProjectElectronics Engineering ProjectHow To
Automatic Street Light Control Circuit using LDR & Transistor BC 547
Electrical Technology105 3 minutes read
Basic Electronic Project – Automatic Street Light Control Circuit
Following is yet another simple Electrical/Electronics project for automatic street light control systems especially for students, newbies and hobbyists.
Features:
It is a dark detector circuit based on LDR and a transistor (BC-547 NPN) which automatically switches ON and OFF the street light system.
It automatically switches ON street lights when the sunlight goes below the visible area of our eyes. (e.g. in the evening after sunset).
It automatically switches OFF the lights when sunlight falls on it (i.e. on LDR) e.g. In the morning, the sensor called LDR (Light Dependent Resistor) senses the light just like our eyes and deactivates the circuit.
Related Simple Projects:
Simple DC Motor (Electrical Project)
Simplest DC Motor Ever.
Advantages:
The automatic operation of street light controlling systems help to reduce the energy consumption as compared to the manually operated street light controlling operations. This is because there is a delay in the earlier switching operations both in morning (during sunrise) and evening (during sunset).
On sunny and rainy days, ON and OFF time is noticeably different which is one of the major disadvantages of using timer circuits or manual operation for switching the street light system.
Enough... Now let’s begin the step by step guide to make the circuit of the basic project.
Related Post: Automatic Plant Watering & Irrigation System – Circuit, Code & Project Report
Components Required:
LDR – Light Dependent Resistor
2 Nos. of transistors. (NPN transistor – BC547 or BC147 or BC548)
Resistor- 1kΩ, 100kΩ, 330 Ohm & 470 ohms.
Light emitting diode (LED) – Any color
Connecting wires – (Use single-core plastic-coated wire of 0.6mm diameter (the standard size) or any wire used in computer networking).
Power supply-6V or 9V
Related Post: Magnet ion simple Electrical Project
Procedure
Insert first transistor Q1-BC547 (NPN) on breadboard (or general PCB) as shown in the circuit diagram 1.
Connect another transistor Q2- BC547 (NPN) on the breadboard as in step 1.
Connect wires across the emitter pin of both transistors and -Ve terminal of battery (lowest/bottom row of breadboard.)
Connect a wire across the Collector pin of transistor Q1 and Base pin of transistor Q2.
Connect a resistor 1K across the positive terminal of battery (topmost row of breadboard) and Collector pin of transistor Q1.
Connect Light Dependent Resistor (LDR) across the positive terminal of battery (topmost row of breadboard) and base terminal of transistor Q1.
Insert a resistor- 330 Ohm across base pin of transistor Q1 and negative terminal of battery (lowest bottom row of breadboard).
Connect a resistor 330R across the 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.
The simple circuit is ready for testing now. Connect 6V to 9V battery terminals to the circuit as shown in fig and see the output. As you block light falling on the Light dependent resistor (LDR), the LED glows and vice versa.
LED GLOWS EVEN IN LESS DARKNESS. Use torch light or lighter if the LED glows in less darkness. In addition, you can try to adjust the sensitivity of this circuit by using a variable resistor in place of R1-300 Ohm. You may use other resistances as well, (e.g., 1KΩ, 10KΩ and 100KΩ, etc.)
Circuit Diagram 1. Automatic Street Light Control System.(Sensor using LDR & Transistor BC 547.). We have tried and Cicuit#1 in this tutorial but you may also try the second one (Circuit#2) mentioned below eight after circuit no 1.
Automatic Street Light Circuit Very Easy
Today I am going to make a circuit of automatic street light.This circuit will work automatically.In the morning light will be close automatically.This circuit is working with LDR.
This picture shows the pinouts of BC547 Transistor.
As pin-1 is Collector of this transistor,
Pin-2 is Base and Pin-3 is Emmiter of this transistor.
Connect LED to the transistor.
Connect -ve pin of LED to collector pin of the transistor as shown
Next we have to solder LDR.
Solder LDR to Base pin and emitter pin of the transistor as shown
Next solder 20K resistor to base pin of transistor and in the +ve pin of LED as you can see
Now we have to solder battery clipper wire to the circuit.
Solder +ve wire of battery clipper to +ve pin of LED and
-ve wire of battery clipper to emmiter pin the transistor as shown
Connect battery to the battery clipper and observe that when light is on the LDR sensor then LED is not glowing and when light is not on the LDR then LED is glowing.
Uses: We can use this circuit as a street light because it will automatically ON and OFF.In the morning when light will come on the LDR then LED will not glow and in the night light will not fall on LDR then LED will glow in the night and vice versa.
Basic Electronic Project – Automatic Street Light Control Circuit
Following is yet another simple Electrical/Electronics project for automatic street light control systems especially for students, newbies and hobbyists.
Features:
It is a dark detector circuit based on LDR and a transistor (BC-547 NPN) which automatically switches ON and OFF the street light system.
It automatically switches ON street lights when the sunlight goes below the visible area of our eyes. (e.g. in the evening after sunset).
It automatically switches OFF the lights when sunlight falls on it (i.e. on LDR) e.g. In the morning, the sensor called LDR (Light Dependent Resistor) senses the light just like our eyes and deactivates the circuit.
Related Simple Projects:
Simple DC Motor (Electrical Project)
Simplest DC Motor Ever.
Advantages:
The automatic operation of street light controlling systems help to reduce the energy consumption as compared to the manually operated street light controlling operations. This is because there is a delay in the earlier switching operations both in morning (during sunrise) and evening (during sunset).
On sunny and rainy days, ON and OFF time is noticeably different which is one of the major disadvantages of using timer circuits or manual operation for switching the street light system.
Enough... Now let’s begin the step by step guide to make the circuit of the basic project.
Home
TUTORIALS
ELECTRICAL WIRING
EE ESSENTIALS
BASIC
MACHINES
POWER
CONTROL
ELECTRONICS
General
Switch skin
Search for
ELECTRICAL TECHNOLOGY
Home>Electrical Project>Electronics Engineering Project>Automatic Street Light Control Circuit using LDR & Transistor BC 547
ControlElectrical ProjectElectronics Engineering ProjectHow To
Automatic Street Light Control Circuit using LDR & Transistor BC 547
Electrical Technology105 3 minutes read
Basic Electronic Project – Automatic Street Light Control Circuit
Following is yet another simple Electrical/Electronics project for automatic street light control systems especially for students, newbies and hobbyists.
Features:
It is a dark detector circuit based on LDR and a transistor (BC-547 NPN) which automatically switches ON and OFF the street light system.
It automatically switches ON street lights when the sunlight goes below the visible area of our eyes. (e.g. in the evening after sunset).
It automatically switches OFF the lights when sunlight falls on it (i.e. on LDR) e.g. In the morning, the sensor called LDR (Light Dependent Resistor) senses the light just like our eyes and deactivates the circuit.
Related Simple Projects:
Simple DC Motor (Electrical Project)
Simplest DC Motor Ever.
Advantages:
The automatic operation of street light controlling systems help to reduce the energy consumption as compared to the manually operated street light controlling operations. This is because there is a delay in the earlier switching operations both in morning (during sunrise) and evening (during sunset).
On sunny and rainy days, ON and OFF time is noticeably different which is one of the major disadvantages of using timer circuits or manual operation for switching the street light system.
Enough... Now let’s begin the step by step guide to make the circuit of the basic project.
Related Post: Automatic Plant Watering & Irrigation System – Circuit, Code & Project Report
Components Required:
LDR – Light Dependent Resistor
2 Nos. of transistors. (NPN transistor – BC547 or BC147 or BC548)
Resistor- 1kΩ, 100kΩ, 330 Ohm & 470 ohms.
Light emitting diode (LED) – Any color
Connecting wires – (Use single-core plastic-coated wire of 0.6mm diameter (the standard size) or any wire used in computer networking).
Power supply-6V or 9V
Related Post: Magnet ion simple Electrical Project
Procedure
Insert first transistor Q1-BC547 (NPN) on breadboard (or general PCB) as shown in the circuit diagram 1.
Connect another transistor Q2- BC547 (NPN) on the breadboard as in step 1.
Connect wires across the emitter pin of both transistors and -Ve terminal of battery (lowest/bottom row of breadboard.)
Connect a wire across the Collector pin of transistor Q1 and Base pin of transistor Q2.
Connect a resistor 1K across the positive terminal of battery (topmost row of breadboard) and Collector pin of transistor Q1.
Connect Light Dependent Resistor (LDR) across the positive terminal of battery (topmost row of breadboard) and base terminal of transistor Q1.
Insert a resistor- 330 Ohm across base pin of transistor Q1 and negative terminal of battery (lowest bottom row of breadboard).
Connect a resistor 330R across the 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.
The simple circuit is ready for testing now. Connect 6V to 9V battery terminals to the circuit as shown in fig and see the output. As you block light falling on the Light dependent resistor (LDR), the LED glows and vice versa.
LED GLOWS EVEN IN LESS DARKNESS. Use torch light or lighter if the LED glows in less darkness. In addition, you can try to adjust the sensitivity of this circuit by using a variable resistor in place of R1-300 Ohm. You may use other resistances as well, (e.g., 1KΩ, 10KΩ and 100KΩ, etc.)
Circuit Diagram 1. Automatic Street Light Control System.(Sensor using LDR & Transistor BC 547.). We have tried and Cicuit#1 in this tutorial but you may also try the second one (Circuit#2) mentioned below eight after circuit no 1.
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