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The TDA2003 is a low costamplifier that is designed to run on single rail power supplies up to 40v maximum. The device provides a high output current capability (up to 3.5A) very low harmonic and cross-over distortion.
Schematic
tda2003 10w amplifier
Links
TDA2003 10W CAR RADIO AUDIO AMPLIFIER datasheet
10PCS TDA2003 10W power amplifier chip