Mini Stereo Audio Amplifier

  • Rajkumar Sharma
  • 11252
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Mini_Stereo_Audio_Amplifier

 

This project is a Mini Stereo Audio Amplifier based on TDA2822 IC.

Description

The dual low power amplifier built around TDA2822 8pin DIP. IC, it is mainly designed to use in portable players, radios and other building block project. A 3V supply can be used to drive headphones providing 20mW in 32 Ohms per channel, and a 12V power supply will provide 1W in 8 Ohm per channel for small loudspeakers.

Specifications

  • Supply 9V DC (supply Range 3V to 12V)
  • Load 8 Ohm Speaker
  • Gain 39dB
  • Input Impedance 100K Ohm
  • THD 10%
  • Frequency Response 20Hz to 20Khz

Schematic

Mini_Stereo_Audio_Amplifier_SCH

Parts

Mini_Stereo_Audio_Amplifier_BOM

PCB

Comments

  • Llewelyn

    Is there an equivalent capacitor for 0.1uf? Im trying to build multiple amps like these,but have no 0.1uf capacitors. I do have 1uf. Will that damage any of the other components?

    3 years ago
    • admin

      0.1uF capacitor is equal to 100nF capacitor which is a fairly common value you should easily find on your local store.

      3 years ago
  • 4.7e = 4k7?

    2 years ago
    • admin

      4.7E = 4.7 Ohm

      2 years ago

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