Introduction: Lm386 Multi Purpose Amp

The Lm386 milti purpose amp, can be used with audio devices, guitars etc :) ENJOY !!!! and it works great :P

WARNING - do not connect to 12v dc supply, the lm386 and the 100uF cap may blow up !!!

HAPPENED WITH ME :p

Step 1: Parts U Need !!

  1. LM386 IC
  2. 10K POT
  3. 220uF CAP
  4. 10uF CAP
  5. 100uF CAP
  6. 0.047uF CAP
  7. AUDIO MALE FEMALE JACKS AS PER REQUIREMENT !!
  8. AUDIO CABLE

Step 2: SCHEMATICS

follow the given schematics first on a breadboard to avoid any inconvenience and later put it on a circuit or purf board and solder.

Step 3: SPEAKERS

  1. I've arranged the speakers from a junk shop nearby.
  2. they are loud enough but after a certain amount of amplification they start to distort.
  3. it would be better if you use bigger and more powerful speaker.

HAVE FUN AND LEAVE YOUR FEED BACK :)

Comments

author
Dr The BoB made it! (author)2015-02-27

Thanks Mate!

I hope to try it out this weekend.
BTW, Was "Feedback" used a deliberate play on words? :)

author
rohan paul made it! (author)rohan paul2015-02-28

didn't get u human !!! !! ??

author
irishjim68 made it! (author)2015-02-17

This would be a better image for your schematic.

386 Amp.bmp
author
rohan paul made it! (author)rohan paul2015-02-18

u made it or picked it up from somewhere ??

author
irishjim68 made it! (author)irishjim682015-02-20

That image is a proper schematic done from your hand drawn schematic. I have made a similar build but used extra filtering capacitors between +VCC and ground because I powered mine from a wall supply and was getting noise. If you wanted to power it with a wall adapter, you only need to add 100uF and a 100nF caps in parallel between +VCC and GND to filter noise. Here is the schematic I used:

lm386_amp_audio_v2.png
author
Gursimran Singh 425 made it! (author)2015-02-19

hi friend, i wanted to make a simple mic - speaker system but was not able to because of missing amplifier than u for helping me

author
rohan paul made it! (author)rohan paul2015-02-19

my pleasure human :)

author
rohan paul made it! (author)rohan paul2015-02-19

my pleasure human :)

author
penelopeblue_330 made it! (author)2015-02-16

I suppose you mean LM386, not LM389? :)

author
rohan paul made it! (author)rohan paul2015-02-17

Thank you human !!! Just saw the mistake :p

author
penelopeblue_330 made it! (author)penelopeblue_3302015-02-17

my pleasure:)

author
azeryth made it! (author)2015-02-16

to be clear this is mono correct? not stereo. 3 speakers are shown suggesting its a 2.1 system with left and right channels with bass. Unless somehow a lm386 is capable of this i am co fused at the use of 3 speakers. If it is capable please explain.

author
rohan paul made it! (author)rohan paul2015-02-17

They r all in parallel , i just connected as many speakers as i had :p so nothing to worry about and yes it s a mone :)

About This Instructable

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Bio: A teenager fit for doing nothing but likes to do everything he likes doing :)
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