Musical Horn

Musical Horn

06/09/2010
Pressing the button activates PS1 IC1, which generates the cycle of notes whose repetition rate is controlled by adjusting the potentiometer P2. P1 regulates the level of the audio signal applied to the input of IC2 through coupling capacitor C5.
The supply voltage of IC1 remains stabilized and limited to 9v, because the 0600 SAB does not accept a voltage 11v. This is done by DZ1 9v zener diode fed through resistor R5. For its part C6 and C7 do a filtering of the supply voltage to prevent interfering signals from the two integrated circuits.


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