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Dark sensor using 555- buildcircuit.com

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Uploaded by on Nov 10, 2010

This circuit shows how we can make a "dark sensor using 555 timer".We use Light dependent resistor to make a dark sensor.
It operates in monostable mode.


When you block light falling on LDR, the circuit switches on the LED for a specific time determined by the values of R1 and C1.

Here, Timing(T)=1.1*C1*R1=1.1*47K*100uF = 5.17 seconds
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  • @carloseletrotecnico1 Con el audio hubiera sido mejor,pero mejor asi que nada

  • pô, otimo video mas faltou o principaall... o audiooo

  • work on me ;P

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