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

This is featured post 1 title

Replace these every slider sentences with your featured post descriptions.Go to Blogger edit html and find these sentences.Now replace these with your own descriptions.

This is featured post 2 title

Replace these every slider sentences with your featured post descriptions.Go to Blogger edit html and find these sentences.Now replace these with your own descriptions.

This is featured post 3 title

Replace these every slider sentences with your featured post descriptions.Go to Blogger edit html and find these sentences.Now replace these with your own descriptions.

This is featured post 4 title

Replace these every slider sentences with your featured post descriptions.Go to Blogger edit html and find these sentences.Now replace these with your own descriptions.

This is featured post 5 title

Replace these every slider sentences with your featured post descriptions.Go to Blogger edit html and find these sentences.Now replace these with your own descriptions.

Showing posts with label electronics. Show all posts

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: