Metronome Circuit


Posted on Feb 5, 2014

This circuit uses a couple of Op-amps to produce an interesting sound effect. The left hand CA741 is wired as a standard astable and produces the timing pulses, controlled by C1, R2 and VR1. The output is fed via C2 to the second op-amp and is also direct coupled via the zener ZD1 to Q1. The right hand CA741 is configured as an integrator, its pur


Metronome Circuit
Click here to download the full size of the above Circuit.

pose being to distort the output pulse from the first op-amp. This produces a ringing effect on the output pulse and gives the circuit a characteristic "tick" sound. A sound sample recorded under Audacity on PCLinuxOS is shown below. The emphasized ringing can be seen in the enlarged view above. The output pulse at the first op-amp will cause the zener and Q1 to conduct on every positive transition. The 1k resistor R8 then acts as a low impedance shunt at the input of the integrator and produces a characteristic "tock" effect. R8, R7, R9, C3 and C4 may all be adjusted to tailor the sound effect.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Small Metal Detector II
    Full-Wave Rectifier (To 10 Mhz)
    More debugging of the NRI 832
    Electronic Siren based NE555
    make this solar powered fence charger
    car parking aid sensor
    USB PICKit2 programmer
    Simple Switched Servo Driver
    Intelligent Presence Simulator
    Parallel Path Magnet Motor
    Clock Controller circuit
    Single Button Force Sensing Resistor
    Flyback converter circuit Clamp



    Top