Sound operated flip flop


Posted on Feb 5, 2014

Here given is a circuit in which the status of the output pins of a Flip Flop IC can be toggled by using sound. A condenser microphone is used for picking up the sound. The first two op-amps in the IC1 LM 324 is used to amplify the sound picked by the condenser microphone. The third op-amp inside LM 324 is wired as a level detector. When ever the


Sound operated flip flop
Click here to download the full size of the above Circuit.

voltage produced due to sound have a level more than that of the reference voltage at pin 5 of the third op-amp, its output (pin 7) goes high, triggering the flip flop IC1 CD 4027. As a result the state of the output pins of CD 4027 ( pin 1 & pin 2) toggles for each burst of sound.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Digital Volt and Amp Meter
    Voltage-Level Indicator
    Lin Temperature Sensor Using The Mc68hc908qt/qy Mcu
    Build a Miniature High-Rate Speed Control with Battery Eliminator Circuit (BEC)
    Five sections of the spectrum display circuit
    6 to 35kV substation cable entry into the segment of Lightning b
    Electronic Watchdog
    CW117 CW217 CW317 12V constant-voltage charger
    BA2181 stepping touch dimmer light circuit



    Top