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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
This mouse and rat repellent circuit is designed because most people agree that rats and mice are not welcome in our houses, meantime some of us don’t want to hurt this creatures.
Electronic pest rat repellents emit high frequency sound waves to create an acoustically hostile environment that effectively repels rodents from protected areas. Sound is inaudible to people and non-rodent pets. It is ideal for environments were the use of poisons is inadvisable or prohibited.
Beware mice, rat and mouse :) . It is known that a mice can hear ultrasonic sounds between 30 KHz and 50 Khz and this is pretty loud for his ears and this electronic rodent repellant does just that.
This electronic schematic will chase away angry dogs. It is build with the all known 555 circuit, a buzzer and a little ferrite transformator.
The frequency must be set with a dog near by :) .
