Audio Circuits

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

Learn! 8 Tone control circuit, Stereo Preamplifier using normal transistors. To control bass and treble effects audio low noise. easy to builds with PCB. Read more

This morse code generator circuit is suitable for learning basis of communication. Unbelievably, short and long tone can be decoded into letters and text. Read more

This is the linear opto isolator circuits that use a few parts and cheap. In circuit we use the opto compiler ICs number of MOC 5010 as based. [….] Read more

SEE! Many Power amplifier circuit diagram with PCB layout. So easy to builds. You can choose 0.5W to 1,200W. Using transistors, MOSFET, IC on a lot types Read more