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Animal repellent circuit diagrams

Insect Repellant
Insect Repellant
October 27, 2010

Repell those repugnent insects from your Garden this Summer with this insect repellant circuit. Designed by Graham Maynard the circuitry consists of a phase locked loop (CMOS 4047) wired as a 22KHz oscillator. [more]

Nocturnal Animals Whisker
Nocturnal Animals Whisker
October 20, 2010

his circuit proved very useful in keeping away from a terrace or a porch some bats and other nocturnal animals. You can use it for similar or different purposes. The lamp illuminates at a 4-5... [more]

Ultrasonic Dog Whistle
Ultrasonic Dog Whistle
October 12, 2010

It's well known that many animals are particularly sensitive to high-frequency sounds that humans can't hear. Many commercial pest repellers based on this principle are available, most of them operating in the range of 30... [more]

Environmentally-friendly Mosquito Repeller
Environmentally-friendly Mosquito Repeller
September 27, 2010

With the return of the fine weather, you’ll doubtless be enjoying lazing around of an evening on your patio or in your garden, but even if you’re not surrounded by marshes or other shallow water... [more]


circuit from:http://www.extremecircuits.net/2010/05/environmentally-friendly-mosquito.html