555 organ circuit


Posted on Feb 4, 2014

Here is a schematic of a simple 555 organ circuit. The circuit is consist of two parts first 555 circuit of organ and second lm386 amplifier for driving 8 ohms speaker. The circuit will generate slightly different tone by pressing each switch from S1 to S7 and work like a piano. Use 100K small variable resistors for R1 to R7. The frequency of tone


555 organ circuit
Click here to download the full size of the above Circuit.

can be changed by adjusting the variable resistors R1 to R7, adjust them like piano tone 1, 2, 3, 4, 5. , and then change these variable resistors to fix resistors if required. More switches with variable resistors can be added before S1 for more tones. You can also change tone of all switch from S1 to S7 at once by adjusting the variable resistor R9. Apply 9 to 12 volt DC to power the circuit.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    Sound Operated Switch
    Sensitive field-strength meter
    General-purpose-power-supply
    Light Transmitter
    tda2030a amplifier circuit used in home theaters
    drawing Any idea which software was used to generate these circuit diagrams
    mini drill speed regulator
    Temporarily Silencing A Smoke Detector
    MPF102 FET Preamplifier Arduino



    Top