10Watt HI-FI Amplifier (TDA2002)

A compact, high-quality amplifier circuit that is also cost-effective. It utilizes the TDA2002, which provides very low distortion. The power supply should be between 12-15 volts at 1.2A. The amplifier's frequency response ranges from 40Hz to 15kHz. A suitable heatsink is necessary. The input can be connected to devices such as an MP3 player or a PC audio output.

The TDA2002 is a class B audio power amplifier housed in a Pentawatt package, designed to drive low impedance loads down to 1.6 ohms. This device is capable of delivering a high output current of up to 3.5A while maintaining very low harmonic and crossover distortion. It requires a minimal number of external components, facilitating easy assembly without the need for electrical insulation due to the Pentawatt package. The TDA2002 is known for its high reliability, featuring built-in short circuit and thermal protection.

The circuit includes the following components:

- R1: 470 ohms
- R2: 220 ohms
- R3: 2.2 ohms
- R4: 1 ohm
- C1: 47nF ceramic capacitor
- C2: 1000uF/16V electrolytic capacitor
- C3, C4: 100nF polyester capacitors
- C5: 470uF/16V electrolytic capacitor
- C6: 1uF/25V electrolytic capacitor
- IC1: TDA2002 integrated circuit

The amplifier circuit is designed to operate efficiently within specified voltage and current ranges, ensuring optimal performance. The inclusion of resistors R1 through R4 serves to set gain levels and manage current flow through the circuit. Capacitors C1, C2, C3, C4, C5, and C6 are strategically placed to filter noise, stabilize voltage levels, and enhance frequency response.

For assembly, it is essential to ensure that all components are correctly oriented, particularly the electrolytic capacitors which are polarized. The use of a heatsink is crucial to dissipate heat generated by the TDA2002 during operation, preventing thermal overload and ensuring longevity of the amplifier.

This amplifier circuit is suitable for various applications, including driving speakers in home audio systems, portable speakers, and other audio devices requiring a compact yet powerful amplification solution.A very small but good quality amplifier circuit that is also fairly cheap. It is based on TDA2002 which offers very low distrortion. Power should be 12-15 volt 1,2A. The amplifier frequency responce ranges from 40Hz to 15Khz. A good heatsink is required. At the input you can connect your mp3 player or your pc audio out etc. The TDA2002 is a class B audio power amplifier in Pentawatt package designed for driving low impedance loads down to 1.6ohms. The device provides a high output current capability up to 3.5A, very low harmonic and cross-over distortion.

In addition it offers very low number of external components, easy assembly with no electrical insulation requirement due to Pentawatt package, high reliability, with embended short circuit and thermal protection. PARTS: R1=470 R2=220 R3=2,2 R4=1 C1=47nf ceramic C2=1000uf/16V electrolitic C3,C4=100nf polyester C5=470uf/16V C6=1uf/25V electrolitic IC1=TDA2002