Using TDA2030 integrated circuit and some power transistors and few passive electronic components can be made a very simple audio power amplifier.
This TDA2030 audio amplifier can deliver a maximum output power of about 40W on a 4-ohm load.
The audio signal is applied to the noninverting input of the TDA2030 integrated amplifier IC1.
Using TDA7294 audio amplifier integrated circuit in bridge mode configuration , can be designed another Hi-Fi power amplifier .
In this TDA7294 bridge power amplifier the value of the load must not be lower than 8 Ohm for dissipation and current capability reasons.
The main advantages offered by TDA7294 bridge mode configuration are: