The TDA2009 is a dual audio power amplifier hi-fi in multiwatt package, developed especially for high quality stereo applications. This application is the bridge amplification, where the two tda2009 internal amplifiers are used. The good thing about the TDA series of integrated circuits is that they are electronic components that are easy to find in electronics stores.
The TDA2009 is a class AB stereo audio power amplifier that contains two identical amplifiers capable of delivering 10W per channel.
It is designed for quality Hi-Fi stereo application which is easy to construct and has a mini mum need of external components.
Schematic of the power amplifier in bridge with tda2009
Suggestion of assembly of the power amplifier in bridge with tda2009
Information on the amplifier circuit in bridge with tda2009
The power supply is simple from 12 to 22 volts max. with current of 2 amperes.
Part List
| Component | Value |
| Resistors | |
| R1 | 2k or 2.2K |
| R2 | 1K |
| R3, R4 | 39 Ohms |
| R5, R6 | 1 Ohms |
| Capacitors | |
| C1 | 100n – Capacitor Ceramic |
| C2, C3 | 2.2µF /25V – Capacitor Electrolytic |
| C4, C6, C7 | 220µF /25V – Capacitor Electrolytic |
| C5 | 22µF/25V – Capacitor Electrolytic |
| C8, C9 | 100n – Capacitor Polyester |
| Semiconductors | |
| IC1 | TDA2009 |
| Connectors | |
| IN | Terminal block connector 2 screws – Audio input |
| OUT | Terminal block connector 2 screws – Audio Output |
| POWER | Terminal block connector 2 screws – Power supply |
| Miscellaneous | |
| Power supply de 12 a 22VDC 2A | |
| Heatsink to IC TDA2009 | |
| Printed Circuit Board, Welding, Wires, Box, etc. | |
Download files for this project – PDF PCB, Schematic in PDF, silk screen.
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