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dog repellent circuit schematic

Electronic Dog Repellent Circuit

The electronic dog repeller circuit produces a discomforting but not harmful, high frequency sound, audible to dogs but not to humans. Help stop the approach of unwanted dogs at up to 15 feet. It uses 555 circuit at is easy to build, this is a dog chaser schematic that you can do it yourself.

From R3 adjust the resonance frequency of the Ultrasonic Ceramic Transducer. 100Vpp were obtained at 30 kHz. Without piezo the output voltage is 200 Vpp.

Dog repellent circuit diagram

dog repellent circuit schematic

10 Comments

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  • johnny

    Hey Guys
    What brings me to your forum is a problem I’m half Mohegan Indian here in Ct . We are having problems with 2 stray dogs constantly on our propery and a stray wolf and bad neighbor with dog that are always on our property my daughter is in danger. I do not wish to put up a fence also no effective police nor health dept.. I wish to aquire or have build a powerful outdoor ultrisonic system , Ive built and fabricated mickey mouse internet sonic systems with no effect. IF this is something someone could build for us. I’am willing to pay upfront for parts and labor and after testing success another dozen units. I can also offer a free stay@ Mohegan sun resort and any free concerts for anyone who is knowledgable to build such a unit.. My family thanks you for anyhelp that you might provide..

    thanks
    johnny
    off2timbuktu@yahoo.com

  • Andronikos

    Ok.
    The diode is IN4001 AND THE TRANSFORMER IS AUDIO OUTPUT TRANFORMER YOU CAN BY FROM MAPLIN.

  • Maddoktor

    no I did not put this scheme. I was hoping for someone to help what are the unknown elements.
    my e-mail is maddoktor79@gmail.com

  • Francis Fernandes

    Circuit is pretty good
    But Ther,s no value of Diode=D1,D2,D3.
    & Transformer mention as EE15
    please could u email me the values of Diodes
    & transformer value so i can work on this pretty circuit of yours
    Thanking You
    Francis Fernandes=email fmfds19@gmail.com

  • FrancisFernandes

    Circuit is pretty good
    But Ther,s no value of Diode=D1,D2,D3.
    & Transformer mention as EE15
    please could u email me the values of Diodes
    & transformer value so i can work on this pretty circuit of yours
    Thanking You
    Francis Fernandes

  • Maddoktor

    i need from this transformer – give me out Voltage about max. 20V , i think use this piezo for safety from dog http://www.farnell.com/datasheets/81154.pdf
    and i think use 3 piezo ( in parallel )

  • Maddoktor

    give info for Capacitor C3 ( ? nF ) , and info for Transformer ?

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