Sound detector switch circuit diagram

Sound detector switch 

<img src="image_sound detector switch.jpg" alt="Sound Detector Switch">

 

The presented circuit serves as the sound detector sensor.  This circuit is built using timer ic 555.  

Sound detector switch circuit diagram 

<img src="image_sound detector switch circuit diagram.jpg" alt="Sound Detector Switch Circuit Diagram">

This circuit is turned on by any sound.  And automatically turns off after a few seconds.  The list of electrical components used in this circuit is given below.

Electronics components list 

ic
NE555 

Transistor 
Q1, Q2, Q3
BC 547

Resistance 
R1, 4.7Ik ohm
R2, 1k ohm
R3, 470 ohm
R4, 47k ohm
R5, 330 ohm

Capacitor C1, C2, 0.1ufC3, 100uf      
  
Mic condenser 

Diode 
D1, 1N4007 

Relay 12v

PCB BORD 


Location: Ramala, Uttar Pradesh 250623, India

Comments

Unknown said…
Thank you sir
22 July 2021 at 08:06
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