Connect another transistor Q2- BC547 (NPN) on the breadboard as in step 1.

Insert first transistor Q1-BC547 (NPN) on breadboard (or general PCB) as shown in the circuit diagram 1.

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Connecting wires – (Use single-core plastic-coated wire of 0.6mm diameter (the standard size) or any wire used in computer networking).

( NPN transistor – BC547 or BC147 or BC548)

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On sunny and rainy days, ON and OFF time is noticeably differ which is one of the major disadvantages of using timer circuits or manual operation for switching the street light system.Įnough … Now let’s begin the step by step guide to make the circuit of the basic project.

This is because there is a delay in the earlier switching operations both in morning (during sunrise) and evening (during sunset). The automatic operation of street light controlling systems help to reduce the energy consumption as compared to the manually operated street light controlling operations.in the morning, the sensor called LDR (Light Dependent Resistor) senses the light just like our eyes and deactivates the circuit. It automatically switches OFF the lights when sunlight falls on it ( i.e.

It automatically switches ON street lights when the sunlight goes below the visible region of our eyes.

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.

ACT-E128K32C-140F2C.Basic Electronic Project – Automatic Street Light Control Circuitįollowing is yet another simple Electrical/Electronics project for automatic street light control systems especially for students, newbies and hobbyists.

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