warbler siren


Posted on Aug 11, 2012

This circuit provides a good siren noise suitable for warding off robot-predators! Change the pitch by adjusting R2, and R5.


warbler siren
Click here to download the full size of the above Circuit.

all resistors are 5 or 10 percent tolerance, 1/4-watt all capacitors are 10 percent tolerance, rated 35 volts or higher




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

Digital theremin
Micropower Clock
USB Printer Share Switch Circuit Project
28 led clock timer with 74hct circuit
relative field strength meter
Thermal electromagnetic circuit long delay over-current release



Top