Triangle wave generator circuit using Schmitt-Trigger
This triangle wave generator circuit uses CMOS gates as an astable multivibrator. It can also generate a square as well as a triangle wave. Read more
CD40106
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