• sgprojects.co.in.jpg
  • Slide_Show_1.jpg
  • Thermal_power_plant.jpg

Projects & Articles

Ultrasonic Repeller for Mosquito & Rat

This is an ultrasonic sound based project which can be directly connected to an AC line. Ultrasonic means out of human hearable of frequency above 20kHz because human can hear sounds in the range of 20Hz to 20kHz. The project is made to generate a frequency around 40kHz through a piezo buzzor or speaker.

Ultrasonic generator

This ultrasonic sounds of high amplitude can be able to disturb some creatures like mosquito, rat and some bugs. I can't say about its 100% working for all type of creatures but I got it's function when trying on rats. To change the ultrasonic frequency, vary the 47k preset in a suitable position. Use good quality speaker for better accuracy. Do not touch on the pcb during operation as it is directly connected with high voltage AC line.

Circuit Schematic

Ultrasonic Generator Circuit

If you have made this project, please share your personal experience about this project. Also you can send your own project photographs to view on this page.


Viewers Feedback

Easy & informative

That's the informative site

Prank lee, United States, Los Angeles

Got the topic

I am looking for a topic got here

Moren Delbia, United States, Redmond

Creative mind

Your articles read my mind

Verinson brother, Virgin Islands, British, Road Town


Click here for your feedback?


Easy Advertise

The Easy Advertise component is to advertise your website name easily.

Coming soon !


Visitor Info

  • IP:
  • Browser: unknown
  • Browser Version: unknown
  • Operating System: unknown

Who Is Online


100% working projects

The site contents 100% working projects with actual programs.

Modern Style


Website is now equiped with high-tech controls and superfast operation.

Mobile Ready

SGPROJECTS have special built-in design optimized for modern mobile devices iPhone, Android and Windows Mobile-based.

SG Templetes by Sameer Gupta