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  • Author Author: mrchunckuee
  • Date Created: 13 Feb 2016 4:14 AM Date Created
  • Views 2530 views
  • Likes 4 likes
  • Comments 11 comments
  • audio amplifier
  • lm386
  • lm386 audio amplifier
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LM386 Audio Amplifier

mrchunckuee
mrchunckuee
13 Feb 2016

Greetings! My first post on Element, is a small audio amplifier using LM386 integrated.

 

For the design has been based on the one proposed in the datasheet (Gain = 200), some components and filters are added to the feed inlet (VALIM = 12V), the circuit used is this:

AMPLIFICADOR%2BDE%2BAUDIO%2BCON%2BLM386.png

Here more photos of the PCB:

buttom pcb

3%2BAMPLIFICADOR%2BDE%2BAUDIO%2BCON%2BLM386.jpg

The final PCB with all componences looks like this:

4%2BAMPLIFICADOR%2BDE%2BAUDIO%2BCON%2BLM386.jpg

Here one video of the circuit in action (video in spanish):

 

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See more projects or info in my blog (in spanish)

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Top Comments

  • jw0752
    jw0752 over 9 years ago +2
    Hi Pedro, This was a very nice project. It is really good that you are open to learning. I have learned a lot of new things by listening to michaelkellett as he always has good solid advice. John
  • jc2048
    jc2048 over 9 years ago in reply to DAB +2
    Page 4 of the datasheet has a graph of Voltage Gain vs Frequency. That shows about 40kHz for the IC itself with a gain of 200 (C pin1 to pin8 = 10uF). Out of curiousity, I tried simulating the input network…
  • nick123
    nick123 over 9 years ago +1
    Welcome, cool amp, see if you can get a guitar amplified through there
Parents
  • jw0752
    jw0752 over 9 years ago

    Hi Pedro,

    This was a very nice project. It is really good that you are open to learning. I have learned a lot of new things by listening to michaelkellett as he always has good solid advice.

    John

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  • mrchunckuee
    mrchunckuee over 9 years ago in reply to jw0752

    Of course jw0752, it is always good to hear recommendations from people with more experience, so i learn more

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  • mrchunckuee
    mrchunckuee over 9 years ago in reply to jw0752

    Of course jw0752, it is always good to hear recommendations from people with more experience, so i learn more

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