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Monday, August 20, 2018

Darkness sensor circuit

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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Blog: http://electronics4ubymanmohanpal.blogspot.com/2018/08/what-is-resistor.html

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


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2 comments:

  1. IbbiDecember 12, 2019 at 4:41 AM

    Sir where to give plus and minus of battery terminal

    ReplyDelete
  2. UnknownOctober 18, 2021 at 2:25 AM

    You did an excellent job on this post!
    LED (light emitting diode) are commonly used in our office, home, shop, and at many more places. Today we will work on how to make a 220Volt AC led light bulb at home. You can make this led bulb easily at home with simple steps.how to make a 220Volt AC led light bulb at home

    ReplyDelete