This is the schematic diagram of 30W bridge amplifier circuit based on class AB audio amplifier chip TDA2040.
The TDA2040 gives you great output electric current and has really low harmonic and cross-over distortion. Additional the device incorporates a patented short circuit protection program comprising an arrangement for automatically limiting the dissipated power so as to maintain the working point on the output transistors within their safe operating sector. A thermal shut-down system is also included.
Download the TDA2040 datasheet here for your project reference.
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