Mosquito repellent circuit project
The mosquito repellent circuit to generates small sound frequency using transistors as bistable multivibrator. It is economical, safer than using chemicals. Read more
Ultrasonic Electronic Repellers
Rat and Cockroach Repellent Circuit Using Astable Multivibrator
The Mouse and Rat repellent circuit using astable multivibrator which use sound waves or ultrasonic so it escaped away. Use transistor and piezoelectric. Read more