18W Audio Amplifier Circuit


Posted on Feb 5, 2014

A correct grounding is very important to eliminate hum and ground loops. Connect to the same point the ground sides of J1, P1, C2, C3 & C4. Connect C6 to the output ground. 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 heari


18W Audio Amplifier Circuit
Click here to download the full size of the above Circuit.

ng) 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 wikipedia. org This is the video tutorial about how to build a realy simple headphone amplifier. The circuit powered with 9V battery and use an IC to amplify the input signal from mp3 player.




Leave Comment

characters left:

Related Circuits

  • New Circuits

    .

     


    Popular Circuits

    power amplifier mj15003 mj15004 circuit
    headphone jacks
    an advanced web server with a microcrontroller
    Lantern controller circuit diagram of a two-dimensional
    Radio circuit



    Top