Electronics Circuit, schematic, electronics project, free electronics project: circuit

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Wednesday, January 2, 2008

Rat Repeller

8:36 AM

Fera Har-q

10 comments

In this page you can build electronics rat repeller. How to work is based on the frequency ultrasonic wave that make crasy them, its about 25-40kHz. In this frequency the human beeing will not hearing, but not for rat, mosquito, bat ,etc.
The key is IC 555 to generate ultrasonics wave. The schematic available now: