The circuit was designed to repel any form of insect using complimentary metal-oxide semiconductor or known as CMOS. A basic mosquito repellent is an oscillator that produces repetitive electronic ...

This is a simple electronic mosquito repellent circuit which produces ultrasound of frequency 20-38 kHz and scare away mosquitoes from home. The basic idea behind developing the circuit is to use a ...

One of the world's top advertising awards went this year to a campaign in which a radio station broadcast ultrasound along with its programmes to repel mosquitoes. But does it work? Definitely not, ...