How to make Darkness Sensor Circuit| Light Sensor Circuit| Simple LDR Ci...

Darkness Sensor Circuit| Light Sensor Circuit| Simple LDR Circuit -by Manmohan Pal



This is a simple Darkness sensor circuit made by using a single NPN transistor  BC 147/547 and a LDR with one 100 K Resistor,



The circuit can be used to make Automatic street lights, Automatic car headlights, Automatic Garden lights etc.





Circuit Diagram:

http://electronics4ubymanmohanpal.blogspot.com/2018/08/darkness-sensor-circuit.html

Components required to make a Simple LDR circuit are



NPN Transistor BC 147/547

LDR

100 K Resistor

12 Volt LED Strip

9 Volt Battery

Battery Connector









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LED Flasher Circuit

http://electronics4ubymanmohanpal.blogspot.com/p/led-flasher-using-transistors-only.html





Dark Sensor Circuit

http://electronics4ubymanmohanpal.blogspot.com/2018/08/darkness-sensor-circuit.html