Electronic circuits schematics

electronic schematics projects, circuits board design

Electronic dog repellent, dog chaser schematic

Electronic DOG Chaser Repeller
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

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