simple sound amplifier project
Here i am presenting you a Low cost sound amplifier. LM386 IC is the heart of this circuit, it is capable of amplifying weak audio or music signals. Connect the audio input of the circuit with the output of signal source in which the sound to be amplified.
Use this project to increase the sound of a music player, a microphone, or for an I-pod. The circuit gives an output power of about 1Watts.

circuit diagram audio amplifier

LM 386 is a versatile, 8 pin dual input package ic. Which is commonly used to amplify low power signals. Normally it provide a gain of 20 and is able to increase upto 200. One of the main advantage is that it consumes only a low voltage.

You can try Mic and Audio Amplifier Circuit

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  1. Nice article..
    Feel free to check out our interesting Android Blog

  2. sir can you label all the parts... and give me a list thx

  3. Techguy,

    Each and every part is specified in the circuit diagram. Click on the image to open it. If i missed anything plz inform me....

  4. Hi Tittu,
    Good job. You are from Kollam ,right?
    Bobby Jacob
    Calgary, Canada

  5. can we use this amplifier from dvd input?

  6. What if i need 8 watt or more output?

  7. Which cap is betwn pin5 and the speaker? Pls guide.

  8. put 220mf cap between pin5 & spkr.

  9. Name the cap betw pin 5 & speaker.