Dog Repeller

220

02:47:00

Using a NE555 timer, an output of 11 kHz to 22 kHz sound by driving a piezo buzzer (where 20 K ohm resistor is) at 82 dbl.  Adjustable potentiometer of 4.7 K ohm can be smaller for ultrasonic operations.

Internet information lists frequency of most dog whistles is within the range of 23 kHz to 54 kHz, so they are above the range of human hearing.

 Tests show dogs can hear sounds in the frequency range of 67 to 45,000 hertz. While frequencies above 36,000 hertz maybe painful to dogs, resulting in whining or barking.

I have not found microphones or sound transducers advertised to handle animal hearing ranges.

published 8 years ago

LeButch

8 years ago

Well, Human can hear frequencies from 250Hz to 20KHz. So the range should start at 20KHz.

lmccoig

8 years ago

If range starts at 20 KHz for dogs they would not hear masters unless they used a dog whistle.

add comment in editor

EveryCircuit is an easy to use, highly interactive circuit simulator and schematic capture tool. Real-time circuit simulation, interactivity, and dynamic visualization make it a must have application for professionals and academia. EveryCircuit user community has collaboratively created the largest searchable library of circuit designs. EveryCircuit app runs online in popular browsers and on mobile phones and tablets, enabling you to capture design ideas and learn electronics on the go.