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
Astable multivibrator
6 Simple transistor | police | ambulance Siren (audio alarm) circuits
Today I would like to introduce the simple and economical simple siren circuits. It is suitable for beginners. My son will gradually build this circuit onto the PCB layout. Look at below! 4 Circuits. Read more
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
2 Headlight Warning buzzer reminder circuit
Often drivers forgot to turn off lights when parking. They cannot start the machine, ran out battery. This Headlight Warning buzzer circuit can help. Read more
6 Simple Logic Probe circuits ideas
Logic probe circuit is useful tool to check digital. As meter is used to measure power in electrical. it used for detect logic “1” and “0” or pulse[…] Read more