Simple Sunrise Alarm Circuit Diagram
This is Morning sun alarm circuit using IC-4011 that hobby It will have sound alarm when morning like a normal clock alarm with lighting sensor same clock. Read more
Oscillator circuits
Insects and mice repellent circuit using IC556
Use high frequency out of the piezo speaker and IC-556 is base as oscillator between 22kHz and 56kHz
This projects is safer and more convenient. Read more
Wien Bridge Oscillator circuits using Op-amp and FET
This is sine wave bridge oscillator circuit more: Read more
High Power Siren circuit
This is High power siren circuit with small PCB size, using CD40106 and four transistor TIP31-TIP32 increase current to horn speaker 20W, 4-8ohm. , and Read more
2 Simple Buzzer Circuit
This buzzer circuit is simple, small, cheap, and requires 3V to 12V. It only uses transistors, piezo or small speaker, and a few components. Read more