Wednesday, March 23, 2011

1W Mini Amplifier Circuit based TDA7052

This is a mini audio amplifier based IC TDA7052. This amplifier is a mono amplifier with single input and single output. You need to build two circuits for stereo amplifier.
1W Mini Amplifier Circuit  based TDA7052

Parts List:
  • R1 : 1K ohm resistor
  • R2 : 10K ohm log potentiometer
  • C1 : 2.2uF/16V electrolytic capacitor
  • C2 : 100nF ceramic/mono
  • C3 : 100uF electrolytic
  • TDA7052 Integrated Circuit
  • 8 pin IC socket

Download area:

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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