The most used ICs are TDA2030 and TDA2003 for small audio amplifiers kits and TDA7294 for higher power amplifiers. In this article we present some representative amplifiers schematics with TDA ...

Take note that the circuit C is to be connected between pins 1 and 5 of the IC. The power output is around 550 mW at 16 ohm speaker impedance. This audio frequency amplifier is ideal for small battery ...