Thursday, January 14, 2010

Stereo Amplifier based TDA2005

Simple, inexpensive and powerfull stereo power amplifier for your practice. The output audio performance is good enough for cheap amplifier :)

6-10W Stereo Audio Amplifier with IC TDA2005 circuit

Component list:

R1, R9 ________ 1K ohm
R2 ____________ 120K ohm
R3, R4 ________ 1K2 ohm
R5, R6 ________ 33 ohm
R7, R8 ________ 1 ohm

IC ____________ TDA2005
Pot ___________ 10K ohm stereo
C1 C2 __________ 2u2/50V
C3 _____________ 10uF/25V
C5, C6, C8 _____ 100uF/25V
C7, C9 _________ 220uF/25V
C12, C13 _______ 2200uF/16V
C4 _____________ 100nF
C10, C11 _______ 100nF

This is a class AB stereo audio power amplifier designed for quality hi-fi applications using a power IC TDA2005. It is easy to construct and has a minimum of external components. The module has output current protection and thermal protection. This is the data book circuit which produces an excellent sound. The supply voltage required for this kit is 8 – 18V DC at 1 to 2 Amps.

Vieh more about Stereo amplifier circuit with TDA2005

About Audio Amplifier
An audio amplifier is an electronic amplifier that amplifies low-power audio signals (signals composed primarily of frequencies between 20 - 20 000 Hz, the human range of hearing) to a level suitable for driving loudspeakers and is the final stage in a typical audio playback chain.

The preceding stages in such a chain are low power audio amplifiers which perform tasks like pre-amplification, equalization, tone control, mixing/effects, or audio sources like record players, CD players, and cassette players. Most audio amplifiers require these low-level inputs to adhere to line levels.

While the input signal to an audio amplifier may measure only a few hundred microwatts, its output may be tens, hundreds, or thousands of watts. More explanation about power audio amplifier can be found at

This is a video tutorial about how to a very simple audio amplifier based on the LM386 amplifier chip. It can be built for less than $20 (or might be less than $8 in some countries) and used to amplify any low level audio signal including a guitar, bass or mp3 player.

Watch the video:

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