Sound activated tone generator

Discussion in 'General Electronics Chat' started by jester1, May 30, 2011.

  1. jester1

    Thread Starter Member

    Feb 10, 2011
    I used this circuit as the basis for the control circuit. The attached is the circuit I hope to build.
    Could this be modified so it keeps Q5 on for say 5-10 seconds when there's short blips of sound.Instead of only activating Q5 when and only when there's sound.