Morse code generator circuit – simple code learning
This morse code generator circuit is suitable for learning basis of communication. Unbelievably, short and long tone can be decoded into letters and text.
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October 22, 2018
Make Simple Electronic Buzzer circuit
This is buzzer circuit easy to build with small size,cheaper using normal transistor and small piezo speaker can use for 3V to 12V as use parts resistors[...]
September 21, 2018
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.
September 4, 2018
4 Simple Door Buzzer Circuits
Use low voltage so safe. I am boring old buzzer. When use AC line, danger of leakage power in the heavy rain, 3 circuits can help you!.. .......
August 30, 2017
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.
August 14, 2017